Well my little sister got me some 2 " lift blocks to level up the rear of my blazer. I finally got a moment to put them on and the kit had curved u bolts. my blazer has squared off U bolts that point straight down. I didnt think it was safe to use these so I held off. I can find regular length U bolts but no longer ones. Any ideas on where to get these??? Or is it safe to use these and how. Do I flip that plate that is on the bottom of the axel?? I have a 12 Bolt rear end. thanks (69K5) Nathan 69 K5 Blazer Completely stock, but not for long.