Unmolested 40/41 1 Ton pickup?

[411Ton]

friends, I have what I believe is a pretty untouched 41 tonner. As you'd expect, the original owner, Pfister Feeds out of Colorado, did some things to the truck over the years. I am looking for someone who has a 40/41 tonner that is as original as one could expect, that I could ask for some pictures of specific areas to understand what I'm missing, or how something was originally built. I have devoured the 'net looking for photos, without luck, Appreciate any pointers!
Chris