Decoding a 67 GMC

[rs74]

Hey guys, I went out to look to see what kind of shape my late father n laws 67 was in this morning. It is in worse shape than I had initially though. Cab corners, rockers, floor, inside kick panel and doors. I couldn't get a real good look as it has stuff piled up against it. Anyway I was able to squeeze in along the passenger side to get to the door. I was able to get the vin but unfortunately the SPID is long gone. Here is what I come up with. VIN# CM3600VPC
which I believe breaks down to 2wd conventional cab, V6, 1 ton, 133" wheelbase, cab&chassis, Pontiac plant, 1967.

I am wondering since this is a cab & chassis with the 133"wb does that mean the frame is the same as a long horn or is it different. I wasn't able to get back far enough to look at the tail end of the frame. If I have had the thought that if I don't find what I am looking for to possibly get this truck and try to find a cab but not really wanting to go down that road if I can keep from it.