[Asshat]

I’m curious about this too, is it just as easy to find a short bed and swap it onto the frame? Can this be done to a 3/4 ton long bed - drop a short bed onto the frame??

Here’s some specs from the Wiki:
115 in (2,921 mm) (short box: ½-ton models)
127 in (3,226 mm) (long box: ½-ton & ¾-ton models)
133 in (3,378 mm) (1-ton models)