engine swap

would a 1991 4.0 swap into 1988xj without any major rewiring thanks

Should be fine.....either keep the renix system and slap it onto the 91 including the intake and it will work. Or take the HO ECU and all the other goodies attached to it and put the whole thing in. Unless you have a 2.5 or 2.8, then you have engine bay mods and motor mount relocation crap to deal with, and the ECU.

Thanks forgot to mention 4.0 1988xj will buy this 1991 4.0 now was not sure