USED DIFFERENTIAL FROM AN OLDS DEALER SHELF.

MAY BE NOS, BUT IS MISSING THE PIN AND RETAINING BOLT. BEARINGS HAVE SURFACE RUST, NEED REPLACE.

I DON'T KNOW A LOT ABOUT THIS. BELIEVE IT IS BOP 12 BOLT WITH 7 1/2" RING GEAR.

IS 28 SPLINE.

THANKS FOR LOOKING!