Working on a 49 GMC FC101 that I bought in parts. As I did not have the opportunity to take it apart I am struggling a bit figuring out how it all goes back together. I have the cab on the frame and would like to dry fit assemble the rest of the front sheet metal including the radiator and front bumper. I am trying to determine if I am missing any parts so I can buy them before I start the painting and final assembly.

Does anyone know where I might find a good set of photos, drawings, mock ups, etc showing clearly how this all goes back together? The fenders and hood are pretty straight forward but the core support and related brackets are giving me some issues. I have a Chevy 47-54 assembly manual and a number of parts catalogs but I still haven't been able to clearly see what's going on. I suspect there are a few differences between the Chevy and GMC

Thanks for any guidance, I know I need a lot.