I took possession of a complete (minus brakes and drums) 8.75 B-body rear end. It is locked-up, frozen, rusted, and whatever other adjective you can think of. I tried to pull it apart. No luck. I chained one axle to to my Ponderosa Pine frame rack and the other axle to my 4x4 truck and banged on it 5 times. No luck. Is there any salvage with this piece?