Exhaust Solutions for your GM Classic

Exhaust

When restoring and enhancing classic GM vehicles, we tend to prioritize the exterior, engine, and interior aspects. However, one vital component that often goes unnoticed is the exhaust system. At Original Parts Group (OPGI), we recognize the critical role a well-maintained, high-performance exhaust system plays in classic cars. While OPGI offers restoration and performance parts for various GM classics, today, we’ll focus on OPGI’s exhaust options using our 1966 Pontiac GTO as a prime example.

In the realm of automotive excellence, MagnaFlow is a trusted name renowned for its performance and sound quality. OPGI proudly offers MagnaFlow Street Series Performance Exhaust Systems, designed to strike the perfect balance between sound and power.

MagnaFlow’s exhaust systems feature straight-through flow designs, delivering unrestricted horsepower and torque. This means you can enjoy increased power without compromising exhaust efficiency. Furthermore, these systems are meticulously engineered to meet the rigorous SAE J1169 standards, ensuring a harmonious balance between interior and exterior noise levels.

We understand that every classic GM vehicle is unique, and a one-size-fits-all approach simply won’t do. That’s why OPGI offers solutions that are not only high-performance but also tailored to your specific vehicle.


Our LS Engine Exhaust Manifolds ensure a seamless fit and provide excellent performance. Additionally, we’ve partnered with Classic Performance Products (CPP) to offer head pipe adapters that bridge the gap between OPGI’s LS exhaust manifold and your exhaust system.

These adapters are engineered with maximum clearance in mind, guaranteeing a seamless and hassle-free installation. Gaskets and mating flanges are thoughtfully included with the adapters to make your project even more convenient.

In addition, our Performance By OPGI and RESTOPARTS®️ exhaust solutions encompass a wide range of options for certain makes and models, including round and square-point headers, oval exhaust tips, exhaust clamps, and more.

If you’re ready to take your classic car to the next level, it’s time to explore OPGI’s offerings. Unlock the full potential of your classic car with OPGI’s solutions. Your classic car will thank you for its enhanced performance, sound, and fit. Don’t wait—explore our entire selection here.

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