Yukon Gear YGK2317 Rear Diff Ring/Pinion Thin ReGear 3.73 for GM 12P Diff 30SPL

Kit consists of a high-quality ring and pinion set and all needed install parts Fits GM 12P differential 30 spline pinion gear, thin gear 3.73 ratio Coverage includes ’64 to ’72 Chevelle, ’67 to ’72 Camaro, ’69 to ’72 Firebird, ’70 to ’72 GTO, 9 other models, or anything hot-rodded with a GM 8.875” 12 Bolt Passenger Axle