This exhaust manifold set is a perfect fit for your 1975-1979 Pontiac Firebird V8 400. It is designed to be placed on both sides of the vehicle and is compatible with the 496002 part number. The brand of this manifold is General Motors, ensuring high quality and durability. This item is ideal for those looking to upgrade their exhaust and emission systems. It is compatible with a variety of vehicles and is a great addition to any car or truck parts and accessories collection. Buy now on eBay Motors and experience the benefits of this reliable and efficient exhaust manifold.