Sonny Id put injectors in the 7.3L, check the glowplug harness connections and repair the rear end spring hangers..to go with the manual you'll have to change out the brake pedal hangers and add the clutch pedal and all that crap,easier with a donor truck there to get ALL the parts from.
<begin rant>I hate the Cummins 6BT in pickups, everybodys gotta take the damn muffler off and make em loud and stupid..last one I drove was a Dodge 3500 from MD to SC and back with worn out tires what a POS..at 2000rpm they have a sweet spot and level out a bit and are somewhat driveable..they are good engines nonetheless if you take em apart and mitigate the killer geartrain dowel pin issue..<rant off> Maybe if a big sweetgumball tree fell on one Id like it