I always thought the '80s conversions looked awesome...big and burly.
I've often thought it'd be great to take a '60-'66 1-ton panel, put rear passenger doors on it like a crew cab, the first section of side glass from a Suburban, move the rear axle back so there isn't so much quarter panel overhang behind tha axle, put a dually axle under it and narrow a set of step side fenders to cover them. The section of glass behind the second doors wouldn't extend all the way back to the end of the truck--there'd still be a couple feet of closed off cargo body.
Of course, if I had this it would mean I won the lottery, so I'd use it as a tow rig to haul race cars to Mexico for the La Carrera and to Newfoundland for the Targa race.
-Brad