Well that is one odd creature...someone with "some" skill & a bunch of effort had a pile of parts & went to work cutting & welding. Several things I see were already mentioned & some that weren't: I feel fairly certain that there is a weld seam in the frame...the truck is too long to be a standard long bed truck & too short to be a full 4 door frame. There is at least most of the width of a cab corner between the Two doors (unlike the 4 door that has a narrow post at the top & none below the window area. I think they left the original cab corner in place & sliced it from top to bottom, then took another cab corner from the Right side of a donor truck, sliced it & welded the Two together.
There is definitely a lock cylinder in the REAR door, but none in the front. Why would a person go to all that trouble, close up the front lock cylinder & leave the rear? Go Figure. I believe that door is just the back of a Left door & the back of a Right door welded together...it is way short compared to a 4 door rear door. Somesort of hinge deal put on the back post...suicide type kit. Looking closely, I see a shiny "dot" in the center, near the bottom of the rear door glass (just like the vent window has)...I'm thinking that area is the pop-out window, seal & surrounding door metal from a Chevy van door? I believe this dictated the width of that rear door...maintaining the same size frame around the glass to look correct.
They should have started with a 4 door cab or Suburban to get the proper roof, ect. Something tells me, it isn't only covered with leaves! It sure is interesting to see some of the "dreamed up" versions people have made with the pile of parts.
For the record..That Red ex-cab in the background in the photo of the Gray truck is about as perfect as it gets in my opinion! Lorne