Familiar with 33/34 pickup box structure?

[Ron Pilger]

We bought a very nice 1933 cab, hood, fenders and decent grill from a friend. It came with an assortment of repro (60 inch) box sides and a variety of aftermarket reproduction parts for the bed base. With no access to a pickup frame, we are going to be mounting the collection of goodies on a 1933 car frame. With no experience in restoring this vintage of truck, I'm unclear as to what we are actually missing for the bed base. I'm also not totally clear if any or all of the holes that are on the passenger car frame are the ones we will need once we determine and order the remaining missing parts for the box. I tried getting assistance from Mac's but couldn't get their help. (I can only assume the relacement parts from our purchase are Mac's products). From these pictures, can anyone with 33 restoration experience tell me what I still need to buy in order to complete and build this box? Anyone have a picture or diagram to help with the box assembly, rivet hole positions or other head-scratchers which lie ahead? Sincere thanks in advance for your thoughts, comments and photos. Ron