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!