It's just metal. all it comes down to is measurements, good cuts and good welds. A little hidden reinforcement too. I have access to long and short bed body panels but no short frame to get measurements from. I can't believe a custom frame builder would be afraid of making a "z" cut in a frame and stitching it back up with a reinforcing back panel. I guess it depends on what kind of frames you build.
I have found all sorts of service manuals on several sites but no assembly manual online. Anyone know where one might be lurking?
