Upgrade your 1979 Ford Mustang with the ACT 600412 Prolite Flywheel, designed to enhance performance with its lightweight construction and low inertia. The Prolite flywheel significantly improves throttle response and acceleration, making it an ideal choice for road racing and rally racing enthusiasts. Although it offers reduced drivability, the benefits on the track are undeniable. Crafted from high-quality materials, the ACT Prolite flywheel features a heat-treated forging for exceptional strength and toughness, while the induction-hardened ring gears ensure maximum longevity. Its one-piece construction minimizes the chance of failure and promotes efficient heat transfer from the clutch disc. Experience a smooth, high RPM reliability, thanks to the flywheel's forged, CNC machined, and dynamically computer balanced design. Take your Mustang's performance to the next level with the ACT 600412 Prolite Flywheel. <b>Features:</b> * Improved throttle response and acceleration for enhanced performance * Heat-treated forging for maximum strength and durability * Induction-hardened ring gears for extended life * One-piece construction for fewer failure points * Forged, CNC machined, and dynamically balanced for reliability