Originally Posted by badass87yj
Swap in a 4.0
I agree, it'll be cheaper and easier for both the swap and for long term maintenance/repairs - nobody's going to have any parts or experience to fix the modified vehicle as time goes on.
Along with the engine (4.0), get the engine compartment wiring harness along with the ECU & the fuel tank with the pump/sender unit & fuel lines. It may be just as cheap to get a 91+ YJ with a rotten frame & body, take what you need and sell the rest of the scrap iron to a salvage yard - this will at least pay for the fuel used in pulling the "rolling stock" home.