The tight fit, inside tube, block hugger design accommodates engine bays with limited space. Our high performance ceramic coating is capable of withstanding exhaust temperatures up to 1300° F. The show quality, rust free coating ensures a long lasting product that can also increase horsepower by keeping hot exhaust temperatures within the header and out of your engine bay. Features a 3/8" thick flange with 1-5/8" tube size and a 2.5" collector and fits angle or straight plug SBC heads. These kits come complete with new header bolts, collector bolts/nuts, reducers and gaskets.