So when I go about doing this swap, I plan to use all the wiring and computer from the 460 obviously, so where do you guys think would be an ideal place to mount the computer? I was thinking under the hood on the firewall probably on the passenger side near the inner fenderwell somewhere. any other opinions?
Mount the computer inside the cab, Mine is located just to the right of the gas pedal near the top of the tranny tunnel. The ecu is not water proof and needs to go in a safe place.
For wiring, get an EVTM from ford for the year of the donor truck. This will answer a lot of wiring questions for you. Also do yourself a favor and solder all splices....just say no to butt connectors.
Get a fuel tank for a 1991+ bronco, it has the in tank fuel pump ready to go and it is a bolt in....except for the fuel gauge. The 1991+ fuel gauge uses a reversed resistance value from the 78-79. To fix my issue I mounted my oem sending unit to the new style pump and wired it in.
Most importantly take your time and do things right. Saving a few hours here can cause you tons of grief later. Inspect all wires & connectors, use the correct type of fuel line, use fuses where needed, etc.
In my experience, the 460 efi gets about the same economy as a healthy, well tuned m-block. Your benefits will be in low speed power/torque, driveability, cold starts, hot starts, reliability, and IMO a better power plant more suited to a FSB. I rank the 460 swap as the single best mod I have done to my truck. It starts and runs flawlessly in any weather, just turn the key, put it in gear, and go.