There is a Chevy of that vintage running around our town that looks for all the world like he had a long wheelbase truck and spun a short bed around backwards on it. It really looks pretty neat. It's a fleetside and the rear wheelwells are almost at the back of the truck. Gives it kind of a bob-tail look. I have not had a chance to talk with him, just seen it on the street. He had to swap the tail gate from one end to the other, but he built a custom one. He's got it nicely lowered with wheels and tires that fill real well. It's still in primer so I'm sure he has more to do. Maybe this will give you some ideas.

Pat