Get it trustworthy enough to be able to get on the interstate, which my 87 V20 can't do with the TH400/4.56 gear.
It needs various pieces of trim here and there, and a sound system for certain. It had broken interior and exterior door handles, which I did right away. It also had a 5th wheel tailgate, so I found a good one in a yard, and cleaned it up. The bed is in pretty decent condition, minus the holes for the fifth wheel. The carpet needs replacing, I think it's too far stained to clean, though I'll give it a shot.
I might put a set of Bilsteins on it, still amazed at the ride quality compared to my solid axle truck.