1963-82 Corvette LS1 full length, 1 7/8" primaries, 3" collector, 3/8" CNC laser cut flanges. Long tube design makes great top end power. Designed for use with a Newman Chassis or OE chassis with adjustable motor mounts. Will require modification to work with factory side exhaust. Includes 3" lead pipes to connect to side exhaust. STD Finish. Very tight fit on chassis.