There's just not a whole lot on these trucks to part out! Especially if the sheetmetal is rotten.
Hood hinges, dash stuff, window lifts (if they're not worn out), some mechanical stuff, bumpers and grille if they're straight.
Things that will make it worth getting: Custom chrome, any options at all, lights, etc. etc. etc.
The point about it being worth that much for the scrap price was pretty good. Strip it and scrap the carcass.
These trucks are really bad about rusting in the roof above the windshield--if that's solid, the cab corners and floors might be overlooked by someone else.
-Brad