well just wanted to let you guys know that I cut corners when doing this mod and put grade 2 (regular) bolts in my rear end. I couldnt find the grade 8 so thats the main reason. Anyway, after rolling my 2gnt and landing on its roof, we had to get it back over to get it on the tow rig. So when they rolled it back over and all the weight of the car came crashing down on that one side, none of those bolts even bent/sheared. So if you got grade 8 you are definately ok imo