I installed the spicer diff cover a while ago. Looks great! I used the bolts that came with the kit and had one start to give while torquing down. I took it out and it was stretched. I did have a thought about it though, the bolts come with machine oil on them and oil gets in some of the holes on the diff. I think they are over-torqued due to the lubricant. The stock bolts are supposed to go in dry and be torqued to spec, lube changes that spec. I also re-used the stock gasket, the corrosion that's on the diff/gasket is all outside the sealing surface. No leaks or anything.