[dmacs66gmc]

Thanks for the replies guys. Yeah it looks like people are just sending me the wrong parts. The rear cross sill I bought was taller than the cross braces that were on the bed so I had to modify it and make it shorter. I believe there was an inch of difference. Also when I got new box sides I discovered the PO had moved the rear fenders forward to line up with what I believe to be bed steps for a 55-59 truck. When I put the fenders in the stock position the side steps were too short. Was able to find a pair 60-66 bed steps and they fit perfectly.
I apologize for my lack of knowledge on these trucks and really appreciate this forum. I have restored a couple mopars but this is my first GMC.
I have included a pic of what the truck looked like when I got it(all green).
I restored the box and got it running the first year. The wife used it as her summer driver the first year while I contemplated restoring the rest of the truck. Last winter it was time to tear it down, repair cab rust and restore the rest of the truck. Looks like the wife will be waiting a couple years to drive it again.