Mercury Monarch 5.0L Year Span 1977-1979 Comments Use SF48 Clutches with SF05 Flywheel Performance Clutch Kits Product Number Torque Capacity Pricing Choose Clutch Single Stage 1 Product Number SF611 Torque Capacity 375 Pricing $350.00 Stage 2 Product Number SF612 Torque Capacity 420 Pricing $419.00 Stage 2+ Product Number SF613H Torque Capacity 485 Pricing $449.00 Stage 3 Product Number SF613 Torque Capacity 550 Pricing $369.00 Stage 3+ Product Number SF613F Torque Capacity 650 Pricing $499.00 Stage 4 Product Number SF614 Torque Capacity 550 Pricing $369.00 Stage 5 Product Number SF615 Torque Capacity 800 Pricing $485.00 None Not Available Pricing Flywheels Product Number Pricing Choose Flywheel Aluminum Product Number SF05A Pricing $425.00 Steel Product Number SF05S Pricing $325.00 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