Finally got around to ripping the rest of the deck off. Solid except for a small spot near the door. There a pic in the link showing a piece of the deck....it's got black stuff on the underside, held up well for a 30 + years it's been in the weather.
Odd framing, the outer "rails" is a solid 2"x2" on one side (where the door was) , the other side (and past the fenders) has just a little piece/stub. The 2 inside main rails are 2"x4", while the A frame is 2"x3", while the other cross members are 1 1/2" angle iron.
Also in a couple of the pics is one of my 1/2 axles (thinking about replacing the current axle [with 13" tires on 4-4" bolt pattern] with the 5- 4 1/2" bolt pattern with 15" tires raising the overall stance of the trailer (approx. 4-6" which will look better behind my tow vehicle 4x4 F-350)
I'm going to draw out the frame in AutoCad; took the measurements today while also grinding off all the torx deck screws (100+ and counting)
In pic 7 it shows how the A frame was welded, I'm probably going to remove that 1st 1 1/2 " angle member and replace it with a 2"x2" close to teh bracket (for added support/strength) and might add a dropped footwell since there's room for it.
http://gs254.photobucket.com/groups/hh117/4VPV105R82/