yea all the guys on pirate say u have to take about an 1/8" off the caliper in some spots but they say the calipers are so stout there is no ill effects, but like i said before if i end up going to a dana 60 ill prob. be getting bigger tires any way so, this really isnt to big a deal, but hopefully the dana 30 will hold up for a while i dont plan on locking it to soon and its a HP with a truss and the 760 u joints. So its a much as u can really polish the dana 30 turd with out chromoly shafts.