ive got axles (60/14b combo) that have 4.10's and a buddy has 4.56's and he wants to trade (he doesnt have overdrive) since my axles have been completely rebuilt with new kingpins and seals and everything, i kind of want to keep it and just swap just carrier/ring and pinion. neither of us know how to setup gears. since they are both original installs and have all the shims and what not, would it be really easy to swap everything over? or is it somewhat indepth? are we going to have to redo the patterns or can we measure everything and set it up the exact same?