Your easiest and best would be another 4 banger... Becuse you already have everything except the engine itself.
If you do go for a bigger engine you should find a Jeep 4.0 and get the computer and all the wire harness, brackets, transmission and just about everything else that you already have for a 4 banger.
Big JIm <img src="/forums/images/graemlins/pfft.gif" alt="" />

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