Both frames look like car frames,both the main and add-on section.Both have shocks,not a truck item.Did any AA's have transverse springs? I don't believe so,but they may have,I'm not an AA person.I have no idea who made the pass through rear,but there were some pretty crafty folks around during the war.I had a little tractor made from a T that everybody swore had to be made by a factory,but it was home made by a blacksmith here in town.
It's on Craigs List in York Pa. Keyword Model A Ford. $900.00 Has a few Pic.
I saw it this morning when I was doing my daily search.
The only things ive added to my collection is a 27T frame and a A400 windshield frame and 4 A gas tanks and 1 nos 26-27 Gas tank.
Going picking in Winchester on Saturday.
The Low mileage 4 door is still inside the trailer.
Wick