Yes, for the most part. You can get bearings and I believe a clutch rebuild kit for the posi, However from what I gather you cannot get a ring and pinion. This is a ten bolt cover, 12 bolt carrier. This is a Pontiac rear.
Still have this unit if anyone is interested. 100 bucks takes it outta here. 2.73 rear. 5x5 posi unit, drum to drum.