PFP offers a 12” upgrade which is recommended for all non-turbo vehicles and those equipped with aftermarket turbochargers. The upgrade is Kit # 07-100 and it replaces the original 11” clutch. When installing the clutch, it must be installed with the upgraded flywheel (Part # DMF009). Flywheels on different applications were balanced differently and interchanging them may result in vibration and driveline damage. Always install new crank bolts and torque them to 47±2 ft. lbs.