Swapping 4.10\'s for 4.56\'s in a 14 bolt I have two 14 bolts. One in a '77 Crew Cab with 4.56's, and one out of another truck with 4.10's. I want to keep the 4.56's, and put the 4.10's in the crew cab, without pulling the differential out. Can I do that? Should I even attempt to do the gear swap, having no experience, or should I pay someone else to do it?