I am running an AMC20 with 35's (bought it like that) and I'm aware that this generally doesn't last long. How difficult is it to put an entirely different axle under there, like DANA 44's? If I got it from another Jeep, would that make it easier? Is there a problem with the transmission of transfer case? Just how difficult is this? Is it better to just buy a kit to strengthen the axles I have? I'm new to the world of Jeeps, so thanks for your help.