GM-any 4cyl engine swap requiring custom components LNF and LSJ to F40 gearbox G6 F40 Year Span 1994-2025 Performance Clutch Kits Product Number Torque Capacity Pricing Choose Clutch Single Stage 1 Product Number SS231-2G6 Pricing $654.00 Stage 2 Product Number SS232-2G6 Pricing $769.00 Stage 2+ Product Number SS233H-2G6 Pricing $719.00 Stage 3 Product Number SS233-2G6 Pricing $635.00 Stage 3+ Product Number SS233F-2G6 Pricing $809.00 Stage 4 Product Number SS234-2G6 Pricing $635.00 Stage 5 Product Number SS235-2G6 Pricing $809.00 None Not Available Pricing Flywheels Product Number Pricing Choose Flywheel Aluminum Product Number SS23A-2LNF Pricing $0.00 None Not Available Pricing Questions? Give us a call. 1-800-828-4379