What I've done so far:
I started by pulling the motors out of both trucks along with the complete wiring harnass from the '88, instrument cluster, steering column, computer, relays, fuse boxes and mating it into the '84. I would have taken the dikes to a lot of the harnass but my eventual goal is to have a truck that I can legally drive to the trail, although I will be trailering it on longer trips. I've also transferred most of the interior other than the dash which is going to be replaced by a custom built aluminum dash. Also installed a hand throttle. I welded the rear diff for now until I get the Detroit. I'm running out of cheap mods and am afraid I'm gonna have to start dumping money into her.