I finally got the bed for my 48 GMC painted. It started as a late model Chevy which I split down the middle & removed 13".
The revels were welded flat & Caddy fins added. Took 3 mos of body work.
The cab has been lengthed 3", the frame lengthed 4" & the top chopped 3 1/2".
Here is what it looks like after 14 mos of work.