Mercury Cougar 6.4L GT Year Span 1967-1969 Performance Clutch Kits Product Number Torque Capacity Pricing Choose Clutch Single Stage 1 Product Number SF271 Torque Capacity 425 Pricing $389.00 Stage 2 Product Number SF272 Torque Capacity 530 Pricing $475.00 Stage 2+ Product Number SF273H Torque Capacity 600 Pricing $489.00 Stage 3 Product Number SF273 Torque Capacity 650 Pricing $399.00 Stage 3+ Product Number SF273F Torque Capacity 750 Pricing $599.00 Stage 4 Product Number SF274 Torque Capacity 650 Pricing $399.00 Stage 5 Product Number SF275 Torque Capacity 900 Pricing $589.00 None Not Available Pricing Flywheels Product Number Pricing Choose Flywheel Aluminum Product Number SF15A Pricing $466.00 Steel Product Number SF15S Pricing $376.00 None Not Available Pricing Specialty Products Billet Flywheel Replacement Friction Plate Kit with Fasteners $79.00 Diamond ground, includes self-locking fasteners Questions? Give us a call. 1-800-828-4379