JEGS/Hooker/Flowmaster offers this exhaust system to help increase the horsepower and flow on your 1964-74 SB-Chevy and 1968-74 BB-Chevy Chevelle/El Camino. This fully bolt-on system is engineered to fit properly and most importantly, increase performance. The JEG'S exhaust kit is made from 3" 16 gauge aluminized steel tubing that has been mandrel bent to optimum flow and fit. The mufflers are Flowmaster 3" Delta Flow and the headers are 1-3/4" Hooker Super Competition Headers. This exhaust system provides a powerful tone on acceleration and a smooth rumble at idle and cruising speeds. Comes complete with all hardware necessary for an easy installation.