Ford F450-Diesel 7.3L for use with dual mass flywheel Year Span 1988-1994 Performance Clutch Kits Product Number Torque Capacity Pricing Choose Clutch Single Stage 1 Product Number SF311 Pricing $389.00 Stage 2 Product Number SF312 Pricing $539.00 Stage 2+ Product Number SF313H Pricing $559.00 Stage 3 Product Number SF313 Pricing $429.00 Stage 3+ Product Number SF313F Pricing $609.00 Stage 4 Product Number SF314 Pricing $439.00 Stage 5 Product Number SF315 Pricing $639.00 None Not Available Pricing Flywheels Product Number Pricing Choose Flywheel Steel Product Number SF25S Pricing $679.00 None Not Available Pricing Questions? Give us a call. 1-800-828-4379