I have seen threads and post of the 4.6 and 4R70W swap into a F100 but no one seems to post any details on the engine ecm/pcm, wiring, fuel system and etc about the process. I have my return style fuel system worked out on paper and general discussion among friends and fellow technicians. I know that Im not the only one that's picky and doesn't want a check engine light on along with multiple dtcs. Who are they using for the ECM/PCM tuning??? All opinions and information appreciated even if I completely disagree lol. I had a complete running car and FYI i couldn't do a frame swap because i like different and my supercab lwb was to long for the 03 towncar chassis.