Yukon Gear YGK2358 Diff Ring & Pinion Rear for Buick/Oldsmobile Pontiac

Kit consists of a high-quality ring and pinion set and all needed install parts Fits GM 8.2” Buick/Olds/Pontiac differential Coverage includes ’64 to ’72 Olds 442, ’64 to ’72 GTO, ’67 to ’72 Firebird, ’69 to ’72 Trans Am, 8 other models, or anything hot-rodded with a GM 8.2” Buick/Olds/Pontiac diff 27 spline pinion gear 3.90 ratio 10 bolt ring gear