Thank you for correcting me, I got some bad information.
So when I find a truck to get parts from I need the wires going from the mass air sensor to the ecu, and all the wires going from the injectors to the ecu correct? I assume that it doesn't matter if the donor truck has a 302 or a 351 or the E4OD tranny, as long as I get an ECU programmed for the 351 and E4OD?

I gotta do some homework and study the wiring diagrams