For Use With Chevrolet 265-400 Cubic Inch Engines; Full Length Chassis Exit; 1-3/4 Inch Diameter 25 Inch Length Primary Tubes; 3 Inch Diameter 10 Inch Length Collectors; Same As Port (SAP); For Off-Road Use Only; Metallic Ceramic Coated Mild Steel; With Bolts/ Gaskets; Requires Alternator Bracket