The cover I put on mine is available on ebay for 75 shipped
http://www.ebay.com/itm/GM-8-5-10-bolt-finned-aluminum-rear-end-differential-cover-car-truck-8-1-2-/171487729555?pt=Motors_Car_Truck_Parts_Accessories&hash=item27ed771793&vxp=mtr
Aside from the bolts which look neat but I would replace with stainless they are about grade 1.5 (junK) Bolts
The cover is thick Aluminum and I can't find fault here with it have a peek (Yes Shameless pic of my ride!)
Combined with a Fel-Pro gasket it seems like a great deal under a 100 dollar bill!
http://www.ebay.com/itm/GM-8-5-10-bolt-finned-aluminum-rear-end-differential-cover-car-truck-8-1-2-/171487729555?pt=Motors_Car_Truck_Parts_Accessories&hash=item27ed771793&vxp=mtr
Aside from the bolts which look neat but I would replace with stainless they are about grade 1.5 (junK) Bolts
The cover is thick Aluminum and I can't find fault here with it have a peek (Yes Shameless pic of my ride!)
Combined with a Fel-Pro gasket it seems like a great deal under a 100 dollar bill!