I am thinking about swapping the fuel injected 4.0HO I have in my XJ into the non fuel injected 90 YJ I just bought. I found this write up
formatting link
has alot of the details for pretty much the exact same swap. Has anyone else here done this? Does his instructions look complete? I would have the complete wiring harness from the XJ. I would also be thinking about using the .30 bored 4.2 block I have sitting in my garage to get an even better punch while I am at it.