1963-69 Dodge/Plymouth 426 V8 & 1967-69 Dodge 440 V8, 11 in. diameter, 18-spline;Designed for power levels up to 650 naturally aspirated horsepower (600 HP for forced induction/NOS); True “Street/Strip” clutch kit for spirited street driving and frequent track use; Pressure plate offers 30% more clamping force than stock; Sintered metallic disc friction surface used for smoother engagement during vehicle launch; Upgraded 8-spring hub with polyurethane encapsulated damper springs handles 3 times the shock load over standard disc springs; All Street 650 clutch kits come complete with pressure plate, disc, throwout bearing, and alignment tool; Available for GM, Ford, AMC, Jeep and Chrysler;