Need HELP.. Rear axle info

[troy54gmc]

Ok guys, I really need your help with this one. I bought what i think is a camaro rear axle today. I just need help determining if it is from a camaro, what year, and what type and gears. It has a really wierd front housing that i havent seen before (check picture) and came with a torsion or panhard bar setup on it. It does have disc brakes and the standard 5 on 4-3/4 lugs. Any info you guys have would help me out alot. Thanks....