Review on Enhance Performance with Proform 66668 Black Aluminum Differential Cover: Perfect Launch Logo & Bearing Cap Stabilizer Bolts for GM by David Causillas

Perfectly matches my 96 K1500 Z71 case. This will work for your GM rear with ten bolts. I bought this because my filler plug was cracked by the previous owner and the diff cap was pretty rusty. Fits the bill perfectly! Bearing cap stabilizer bolts probably don't make much sense to me since I don't use crazy force, but fill and drain bolts are fine. Just make sure you measure the fluid going into the diff since the filler plug is higher up. My differential takes 2.2 liters. You can also find out which type of back you have from the assembly sheet in the glove compartment. The paint leaves a lot to be desired, it was badly cracked in coating but I don't really care about the looks but it does make it look a bit bad. Would give five if the color was better.