Ford Mustang V6 3.7L Performance Kits with V8 dowel pattern for use with SPEC flywheels Year Span 2011-2017 Performance Clutch Kits Product Number Torque Capacity Pricing Choose Clutch Single Stage 1 Product Number SF501-2 Torque Capacity 550 Pricing $439.00 Stage 2 Product Number SF502-2 Torque Capacity 630 Pricing $549.00 Stage 2+ Product Number SF503H-2 Torque Capacity 705 Pricing $529.00 Stage 3 Product Number SF503-2 Torque Capacity 755 Pricing $439.00 Stage 3+ Product Number SF503F-2 Torque Capacity 875 Pricing $670.00 Stage 4 Product Number SF504-2 Torque Capacity 755 Pricing $429.00 Stage 5 Product Number SF505-2 Torque Capacity 1060 Pricing $640.00 None Not Available Pricing Flywheels Product Number Pricing Choose Flywheel Aluminum Product Number SF37A Pricing $725.00 Steel Product Number SF37S Pricing $589.00 None Not Available Pricing Specialty Products 26 Spline Disc Hub Option $89 for use with transmissions utilizing a 26 x 1 1/8 spline input shaft Billet Aluminum Pressure Plate Option $299 Substantially reduces rotating mass, increases power and throttle response , adds infinite rebuildability Billet Aluminum Flywheel Replacement Friction Plate with Fasteners (Included on Flywheel) $89 Diamond ground, includes self-locking fasteners Questions? Give us a call. 1-800-828-4379