I did this, pulled from a 93 F150 and used everything off the truck. I still have the full front dress/serp setup on there. Also, I pulled all wires out of the engine compartment harness that didn't need to be there, and used the ECU that was in the truck as well. Pretty much plug and play and it fired up the first try. I never did touch a single wire on the engine itself, just unplugged it, removed, installed, and plugged it back in. It's not that hard to do. If you don't have a 3" body lift and a hood scoop though you'll have to remove the truck upper intake and then screw with the rest of the setup, but I installed it as-is and it has worked flawlessly for me.