we need the 12 bolt cover with 12 bolt ring ring andf pinion gears and carrier if you have it. 1965-1976 full size cars mostly known as the olds full size 9.3 12 bolt 31 spline bolt in axles ratios 2.93 or 3.08 even 3.23 or 3.42 trying to help a guy get off my rack as the gears are wiped out this is NOT the A body olds 12 bolt cover 10 bolt ring... Jim J D Akron, Ohio
