Others will chime in I'm sure, but the door tag tells me you have a 3600 (3/4 ton truck). The frame looks exactly like my '51 3600 frame. You do have a Very Nice truck and it sounds like you've got a solid plan to make it a dependable driver.
On another note, does NEE or FPL figure into your day? My last major work was project manager on a NEE pipeline project in ND.
Added in edit; Original Chevrolet Manuals
here and
here. Just in case you haven't found this resource.
Good Luck,
RonR