Yukon Gear YGK2323 Rear Diff Ring/Pinion Re-Gear Kit 3.73 for GM 12P 30SPL

Kit contains a ring and pinion set, positraction unit, and installation parts Fits GM 12P differential 30 spline pinion gear, thin gear 3.73 ratio Includes Dura Grip positraction LSD, 30 spline Coverage includes ’64 to ’72 Chevelle, ’67 to ’72 Camaro, ’69 to ’72 Firebird, ’70 to ’72 GTO, 9 other models, or anything