Need help finding Electrical Person to hire in New Mexico, Magnum Swap!

Hotwire just might be a reasonable solution for you. I would use their harness in a heartbeat if I was doing something nice. I just don't want to spend more on a harness than I did on the truck, and low mile 5.9 Magnum combined....lol. It takes 4 or 5 wires in the original wiring to make it run, and I just need some help getting steered in the right direction.
Are you using the donor fuse box/relays. ?
That's the only way to mount it simple like ..basically you need to power the
Pcm
Fuel pump
Starter
Asd relay/engine relay
And then ground the pcm

C1. #2 12v run start
C1 .#22 always 12v constant
C31. Ground
C32 ground

Jump the starter