A complete system designed to replace the original exhaust components in General Motors “G-body” vehicles, typically manufactured between 1978 and 1988. These kits typically include exhaust manifolds or headers, connecting pipes, mufflers, and tailpipes, often accompanied by necessary hardware for installation. An example would be a stainless steel system designed for a 1985 Buick Grand National, promising improved flow and a deeper exhaust note.
The significance lies in enhancing engine performance through reduced backpressure, potentially leading to increased horsepower and torque. Furthermore, such a system can improve fuel efficiency and provide a more aggressive exhaust sound. Historically, owners of these vehicles have sought aftermarket exhaust solutions to overcome the limitations of the factory-installed systems, which were often restrictive and prone to corrosion.