i stared a post questioning if you can swap the pumkins on the 3/4 ton 47-53's, i was doing some reading on it, and my question is if you can swap these pumkins out with a 67-72 3/4 ton, can you find a 4x4 3/4 with a locker and just puit a locker in the rear end of the 47-53 using stock pumkin, or are these totally different?