What Flatblu4748 said. My '51 bed was also welded there. I rewelded there after restoring the bedsides and installing a new rear cross-sill and the destroyed stake pocket (pic). Yours looks in way better shape. You can carefully grind those welds away to disassemble it.
I'll move this thread over to Making a Stovebolt Bed where it'll be more on topic.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.