I took a look at the truck in question over on the 67-72 site (I'm not a member there, though). Something is definitly not right about that truck. The bed is much shorter than the standard 6 1/2' shortbed, and the wheelbase looks to be about the same as a Blazer rather than a short 1/2 ton. Unfortunatly, there aren't any pix of the suspension, axles, and frame, hard to tell what's been altered. But, from what I see, looks like it might have been a long 3/4 ton 4x4 originally, and somwhere along the line it was cut down for an unknown reason.