well, somethings worked out put not all. the rear d-shaft i bought and sent out ($170. later)had the wrong flanges on it. at both ends! could'nt use it, but eventually i'll swap flanges. went pretty smooth as far as installation(about the same as doing it in the sand ayt moab ) thanx to WORLD WIDE OFF ROAD in ogden utah for the use of the 3.73 third. i am sooooooo glad to get that out of my rig!!! it feels so good to be able to pull a hill now. WHAT A DIFFERENCE!!!!!