Blocks came in for the rear from Rough Country. 1.5" is the most we could go with out extending the UBolts. Jackstand on the frame, Loosen ubolts, jack under axle. Take one tire off lean axle down, slide block in and loosely snug ubolts. Moved to the other side for same thing. With my rear pipe stand i use on back of truck. I screwed the stamd up to take a little bit of weight off the springs. Took a tape and measuring off the factory spring perches squared the axle relatively close with truck.
