I have a 62 uni long box. It was a project a buddy started. He took some out of the rear to shorten it up. Finished it off nicely, and it looks fine back there. Might not be the same as a real short box in the back but it looks good. I was thinking that I could move just the wheel opening cut outs forward and move the rear up to match the wheel base of a true short bed.

I looked at it a bunch though and I'm actually fine with its looks. Because it has the bed attached to the cab it doesn't look bad like a lot of detached long box trucks Ive seen that the same treatment has been done to. Its a rust free truck and Ive never really looked that closely underneath to see this torque box thing.

Its not really a truck for this forum though. Has a Volare front clip and a 350/350 Chev. I believe this site is for more "pure" Ford enthusiasts. I know I joined awhile back when I had a 78 Ford 3/4 ton ... very helpful place.