Im making about 365 to the wheels . I plan on making 700 or so on the stock long block and eventually making 1200 on a mmr short block. I plan on swapping the pcm from the 5.0 into my 03. I haven't figured out how I can get my cluster and other electronics to work with the coyote harness .
The 5.0 Coyote uses a different CKP sensor located in a different spot on the motor. Other differences include the power steering pump, variable cam timing, knock sensors.
The electronics for the 2005+ model year are also very different. See drive by wire. Look up "smart junction box" for other example differences. Transplanting the PCM any 2005+ MY into a 2004/older is difficult because the electronics systems that the PCM depends upon are not in place.
This is why many ppl doing this swap use a stand alone Coyote PCM engine management. This in itself creates problem integrating the "other" car systems to get stock drive-ability. Think automatic transmission, AC, Cruise control, lights, ect.
I encourage you to research the limits of the Coyote 5.0. It's my understanding it comes with a cast (not forged) crank. There are limits on the pistons and rods as well. Some resources say the limit is 400HP. Others say the limit is 600HP. Either way, 700HP on the stock Coyote will likely need upgrades to reach the planned HP levels day one.
Obviously the transmission is going to need some "help" as well. Rear end.......
If 1200 HP is your goal, why not go the route of a "built" 4.6? This avoids all the issues of making an engine management system from a very different era work in an older car. The wiring and PCM that you have now will work with known modifications.
Disclaimer. Obviously anything can be done with enough $$ and time. So anything is possible. However, it seems to me that if high HP and stock drive-ability are your goals, the Coyote is a more expensive/time consuming/difficult way to get there. If not looking for advice, then just ignore mine and I will drop off. Good luck.