This exhaust header is designed for use with Chevy 454 big block engines. It is made of durable steel and comes in a sleek black color. The mounting style is bolt-on, and it is designed for use on the front of the vehicle. This exhaust header is a perfect addition to any car or truck, and it is sure to improve the performance of your engine. It features both left and right exhaust ports, making it a versatile choice for any vehicle. Whether you are upgrading your exhaust system or simply looking for a replacement part, this exhaust header is a great choice. The exhaust header are new One of the exhaust header on one pipe have damage you will see this in the photos.