Anyone here swapped a 4.0 into a CJ? Anyone modified a Wrangler or Cherokee harness to do so? I'm working on a '93 harness to swap a '93 injected 4.0 into my '83 CJ5. If I'm successful I'm going to swap a 4.0 head,injection and exhaust on our '89 Islander.

Check out CJOffroad.com.  They have an entire forum dedicated to swapping the 4.0 into CJ's.

Some of the best info you can find on this swap.

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Professional Jeep Pilot