You keep coming up with these super complicated swaps, instead of what is practical, and we know works. As someone who is a hot rodder at heart, and has done numerous swaps, sometimes simple is the right answer. 5.0L M113's are super cheap, and not overly complicated to drop in. The 5.4 is the much better choice, and just as easy to swap.

You got right to the core of the area you are going to be weakest in, and that is the CAN bus. Oh, and it's not just the dash you will need to worry about. It's the AAC, ESP, PSE, AB and more. As for the Coyote, have you ever taken a tape measure to one? Do that, then go look at the CF.

Sorry to be harsh, but I think this is beyond what you really want to get involved with. Do a 'simple' M113 swap, then maybe think about something exotic, like M137/M275 if you want to really take on a challenge of something no one has tried before in a CF.