I have a 1989YJ 4.2 5spd manual transmission and I purchased a 1991 Cherokee with a 4.0HO 5spd manual transmission. The question I have is can I take the engine, transmission and transfer case out of Cherokee and put it into my YJ? And can I take the gas tank-sending unit out of the Cherokee and put it in my YJ tank? I have the entire Cherokee.

I'm not sure what direction to go in? To change out the entire thing? or go with the 4.0 head change out on my 4.2? Which is best and which is easier?

Any help from someone who has done this in the past would be appreciated.

Thanks,

Joesphelk