Sorry i haven't gotten back to you sooner. I rewired the Jeep harness myself. It is a bit time consuming. I got the electrical schematic online and used it a bit for reference but mostly i pinned out each and every circuit from point of origin to termination. When it was all said and done, i was able to re-allocate a bunch of space in the stock fuse panel in the engine compartment. It was a good project.
As far as the engine harness goes....just buy one from Ford Racing Performance Parts (FRPP). I ordered mine from the dealer in Lumberton, NC. I did have to cut into the loom and reposition main power and ground but it turned out great.
the Ford Engine is a great swap into a Jeep, smaller, front mounted distributor, good clearance for headers, etc.
If this is your daily driver you might want to find a hoopty to get around in beacause it is time consuming, but you will learn alot doing it.