I found what appears to be an M185 shop on an M35 (deuce and a half) truck. Seems to be in good shape automotively, and the lights and power distribution in the van all work well. Previous use was an operations truck for the Wyoming National Guard based on the stickers and small commercial phone directory I found inside.
Is a 2 1/2 ton truck too much for hauling around amateur radio gear? Yes, but it will be a blast. Once the radio shack is put together, I wont have to lug around batteries and equipment. The shop has ample space to even be a camper of sorts. I am finding that many people convert these shop trucks to be campers, but my goal will be to approximate a military communications shelter.
Looking forward to getting a basic setup and getting out to the field for Parks on the Air.