I recently acquired a 12 bolt posi and 2.93 gearset.The guy I got it from,said it came from a full size Pontiac.The posi has a date code of E253 May 25,1973.It also has a cast #250 on it.This posi has 31 spline axle side gears,and the pinion gear has 30 splines.Do any of you know what this will fit?? Thanks,Doug
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