Hello All,

I started to swap my 4.2 for a 4.0 and everyone at 4x4wire has been helpful with all the questions that IÆve had and I appreciate it. I have at least one more.
What I have done to this point is purchase service manuals for both the 91XJ and my 89YJ, tagged & labeled everything coming out of the XJ and everything in my YJ. I pulled both engines, changed the water pump on the XJ to a 91YJ so I can run a mechanical fan, swapped out the 4.2 fuel tank and replaced it with a 91YJ 4.0, put my YJ transfer case on the XJ AX15 transmission, purchased new motor & transmission mounts, purchased a 91YJ down exhaust pipe and a couple of other preventive maintenance items.

IÆm going to install everything tomorrow. The question I have is the XJ motor and transmission is about an inch longer than the YJ motor and transmission? will I need to modify my transmission skid plate, drive line, shift & 4x4 handles that enter the cab and drive lines? will I even have room in the engine compartment between the motor and transmission (fire wall). If all this needs to be changed can I just move my motor mounts forward about an inch? If I do that will I have enough clearance for my fan and radiator?
Or am I just over thinking this and itÆs all going to fit?

Any more information will appreciated.

Thanks,

Josephelk