507OLDS

12-bolt O-axle TM-code 3:42 posi,with original 31-spline axles.This is a factory 31-spline rearend.The casting number on the pumpkin is 394139.The julian date is 5 = January 5th.Finish date stamped A10(Januray 10th).This is a show quality rear.No pits,modifications,or damage.Original GM 3:42 gears in excellent condition,and the #672 posi unit rebuilt with NOS clutches.Timken bearings & seals.Hot-tanked,blasted,epoxy-primed,and urethane coated satin black.Filled with fluid & additive,and ready to run.Backing plates included,but no brake hardware.All new brakes can be added for additional cost.E-mail me for pictures or questions.
$1300.00 plus freight.