McLeod nodular iron flywheels offer high-quality, yet low-cost alternatives to the hassles of resurfacing a flywheel, Nodular iron flywheels are stronger than the OEM models, and these McLeod units are direct bolt-in units, Don't overlook your flywheel when replacing your clutch, Fits 1997-04 Chevy LS1/LS6 engines, 168 tooth ring gear.