GM-Chevy Full Size TrucK- Gas 4.1L 11in upgrade Year Span 1963-1976 Performance Clutch Kits Product Number Torque Capacity Pricing Choose Clutch Single Stage 1 Product Number SC721-2 Torque Capacity 435 Pricing $405.00 Stage 2 Product Number SC722-2 Torque Capacity 496 Pricing $525.00 Stage 2+ Product Number SC723H-2 Torque Capacity 556 Pricing $579.00 Stage 3 Product Number SC723-2 Torque Capacity 591 Pricing $429.00 Stage 3+ Product Number SC723F-2 Torque Capacity 687 Pricing $659.00 Stage 4 Product Number SC724-2 Torque Capacity 591 Pricing $429.00 Stage 5 Product Number SC725-2 Torque Capacity 832 Pricing $629.00 None Not Available Pricing Questions? Give us a call. 1-800-828-4379