So we are finally going to swap A.R.'s 70' 1/2 ton over to 3/4 ton with discs. We're using a 1 ton rear for the proper spring pad width. From what I've read on hear this should be a bolt in, anything I missed? What about swapping over the power brakes? We have a 76' donor truck so parts should be no problem. Just thought I'd get yalls .02 before digging in. Thanks.