my 8 3/4 rear end had the original 5 x 4" bolt pattern A body axles that were plug welded and redrilled for 5 x 4 1/2 bolt pattern making my rear brake offset 2.275 instead of 2.525 . which i had no idea but Cass sure did and put together a kit for me thats not on his web site. I ended up with the wrong size banjo bolts and stainless flex lines but Cass was all over it and sent me the right ones ASAP. the flex hose tabs on my kit didn't mount on the caliper brackets like his other kits so he had me mount them to the axle instead which i actually liked better. everything turned out really good and i am happy happy. Dr. Diff is the ****