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Description
Pacemaker 2.5" Exhaust System with 1 7/8" Headers for HSV VY S2 VZ 5.7L V8 Ute 2003–2006 - PP5363-27Pacemaker 2. 5" Performance Exhaust System with 1 7 8" Tuned Headers & Rear Pipe Only for HSV VY Series 2 & VZ Ute (5. 7L V8) PP5363 27 Unlock major horsepower gains and unleash an ultra aggressive muscle roar from your 5. 7L LS1 engine with the Pacemaker Sport Systems complete performance exhaust solution. Specifically engineered to clear the distinct utility floor pan, chassis layout, and high performance independent rear suspension of the HSV VY
Pacemaker 2.5" Performance Exhaust System with 1 7/8" Tuned Headers & Rear Pipe Only for HSV VY Series 2 & VZ Ute (5.7L V8) - PP5363-27
Unlock major horsepower gains and unleash an ultra-aggressive muscle roar from your 5.7L LS1 engine with the Pacemaker Sport Systems complete performance exhaust solution. Specifically engineered to clear the distinct utility floor pan, chassis layout, and high-performance independent rear suspension of the HSV VY Series 2 and VZ Maloo platforms, this high-flow setup is configured with a high-volume "Rear Pipe Only" exit plan instead of a standard rear muffler assembly. Featuring large-diameter 1 7/8" primary tuned headers paired with a smooth 2.5" mandrel-bent layout, it delivers maximum exhaust gas velocity while providing an unrestricted bark. It is the ultimate match for cammed, modified, or high-scavenging 5.7L builds that demand peak top-end performance and a standout racetrack sound. Note: Fits HSV VY Series 2 and VZ Utility (Ute / Maloo) models (2003–2006) equipped with the 5.7L LS1 V8 engine.
Features:
Precision-manufactured in Australia to deliver the absolute peak in flow efficiency, heavy-duty scavenging, and raw acoustic output for the high-performance Commodore utility platform.
- Complete Headers Setup: Total kit featuring 1 7/8" primary tuned headers, 3" hi-flow cats, and active piping sections.
- Rear Pipe Configuration: Built with a straight-through rear pipe replacing the standard tail muffler for maximum exhaust bark and unrestricted flow.
- 1 7/8" Tuned Headers: Upgraded large-tube design engineered to optimize top-end power potential and high-RPM volumetric efficiency.
- Premium Materials: Constructed completely from durable Exhaust Grade 409 Stainless Steel for superior longevity under high thermal stress.
- Mandrel Bent Tubing: Heavy-duty 2.5" (63.5mm) pipe structure ensures a smooth, constant internal diameter to prevent flow restriction.
- Hanger Integration: Designed as a direct bolt-on layout utilizing the vehicle's factory mounting points.
| Product Specifications for PP5363-27 | |||
|---|---|---|---|
| Brand | Pacemaker Sport Systems | Part # / SKU | PP5363-27 |
| Product Type | Headers & Full Exhaust System | Primary Header Size | 1 7/8" (47.6mm) Tuned Primaries |
| Material | 409 Grade Stainless Steel | Piping Size | 2.5" (63.5mm) System |
| Engine Compatibility | 5.7L LS1 V8 | System Exit Configuration | Rear Pipe Only (No Rear Muffler) |
Important Fitment Notes:
- Specifically engineered to fit HSV VY Series 2 and VZ Utility (Ute / Maloo) platforms powered by the 5.7L LS1 engine (2003–2006).
- Utility Specific Chassis Layout: This configuration features tailor-formed exhaust pipe lengths and bends designed precisely to mount cleanly under the utility bed structure and will not adapt correctly to Sedans or Wagons.
- Full kit scope: Includes 1 7/8" Tuned Performance Extractors, 3" High-Flow Metallic Catalytic Converters, and a complete 2.5" exhaust system featuring a straight-through rear section with a rear pipe only.
- The "Rear Pipe Only" deletion of the rear resonator creates a significantly louder, unfiltered acoustic profile compared to full-muffler configurations.
- Direct bolt-on design reuses vehicle-specific factory hanger positions.
- Professional automotive performance technician installation is highly recommended to guarantee ideal ground clearance and tight seals under the tray.
Vehicle Applications:
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| HSV | ||||||||
| HSV | Maloo / Ute | 2003 | 2006 | Utility (Ute) | VY S2 / VZ | 5.7L LS1 V8 | Maloo R8 / V8 Models | RWD |
Warranty Information
| Product | Warranty Period |
|---|---|
| Pacemaker Sports Exhaust Systems | Five (5) years. |
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4.6 ★★★★★
Based on 1110 reviews
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Product Reviews
★★★★★ 5
Wonderful work from a great historian
Format: Hardcover
James Holland is a very talented historian and his books on WWII are amazing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 21, 2026
★★★★★ 5
How to capture the import of an entire war by writing on its end
Format: Kindle
The authors seamlessly cover ed the macro and micro accounts of events and participants to capture the stunning and all important end of WWII. I was engaged and stimulated throughout my read of this book and highly recommend it for enthusiasts who are conversant with the war and want a better understanding of its close.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 27, 2025
★★★★★ 4
World War II - The Final Months
Format: Hardcover
The book takes you through the final months of World War II, focusing on eight key moments when the fighting finally came to an end. It’s not just a dry rundown of facts or battle maps — the authors do a great job of bringing the people involved to life, from famous leaders to everyday soldiers and civilians caught in the chaos.
What I really liked was how the story moves around the globe, covering Europe, the Pacific, and beyond. It keeps the narrative fresh and exciting, giving a real sense of how the war unfolded on many fronts at once. Sometimes I had to pay close attention to keep up with all the locations and characters, but that only added to the feeling of being caught up in a fast-moving, gripping story rather than a history lesson.
What stood out most was how it made me feel the human side of history—the fear, the relief, and the confusion as the war finally ended. It’s full of details, but it never felt boring or too technical.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 19, 2025
★★★★★ 5
The Fix
Format: Hardcover
An insightful and interesting book on how our country's first legislators try to make sense of the new and fairly short U.S. Constitution, which, being drafted by humans, was bound to be imperfect. A lack of clarity on some point might be due to the changeable nature of words themselves or to confusion or obscurity of thought by the authors. And, who were the authors? The men in the room who came up with the product or the various state conventions that approved the final product?
Professor Gienapp writes well and with a fine grasp of his subject. He uses concrete examples to illustrate his main points. For example, Congressional debates over the constitutionality of a proposed federal bank, the ratification of Jay's Treaty, and even whether the Bill of Rights was to be incorporated into or simply added to the original document.
Most people think of U.S. constitutional history in terms of its drafting and ratification and/or its later judicial interpretation by the Supreme Court. Here, Professor Gienapp focuses on the initial work of interpretation by the first few sessions of Congress.
This book is essential reading for those interested in the U.S. Constitution and the internal architecture of our government. I think those who spend countless hours viewing frenetic talking heads say this or that about the constitutionality of some issue or another (or the nomination of a justice to the High Court) should throw their television set out the window and, instead, settle into a corner chair and calmly read this and other such thoughtful books.
This one should win prizes.
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Reviewed in the United States on October 14, 2018
★★★★★ 5
Excellent Book
Format: Hardcover
Stanford University History Professor Gienapp has done an outstanding job of researching and writing this historical analysis of the interpretation of the American Constitution by America's first Congress. Professor Gienapp analyzes data primarily from Congress's problems interpreting the removable of executive officers, chartering a national bank and approval of the 1794 Treaty with Great Britain negotiated by Chief Justice John Jay, the "Jay Treaty." Gienapp shows in clear writing how Congress used records of the debates at the Constitutional Convention and State Ratification Conventions to resolve these constitutional issues. I highly recommend this book to anyone concerned with the interpretation of the American Constitution.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 18, 2020
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