This new lightweight clutch weighs in at aonly 6 1/4 lbs. for a 2 disc and 7 3/4 lbs. for a 3 disc. They feature an aluminum flywheel with lightened steel wear plate, lightened floater plates, lightened pressure plate with aluminum fulcrum pivot ring and a lightened aluminum top plate with dual diaphragm spring for maximum clamping force. They are available to fit 85 or older SB Chevy, 86 or newer SB Chevy, SB Chevy LS motors and SB Fords. Clutch assemblies come with reverse mount starter ring gear to fit popular reverse mount bell housings.