I have a '92 XJ 4x4 300,00 miles all factory. It is totally wore out and used up. I have a 96 XJ 2x4 with 150,00 on it and in really good shape. How bad would it be to convert the 2x4 to 4x4. I know i will need to have the tail shaft off the trans and the transfer case, front end, and so on. But...