I'm in the middle of a cab off of my '57 1/2 ton. It had a cosmetic resto when I bought it. It looked good. I did the mechanical work and put it on the road for a year. The bed needed work, so I took it off. One thing led to another. It will be a driver, but I now know every part of the truck. Every piece has been taken apart. Still a lot of work ahead. I wouldn't have done it differently.
If an assembly manual is available, buy it. Catalogs help too. Take lots of pics and notes. I have used lots of plastic zipper bags, containers, and tags w/strings. Vintage Truck magazine has been helpful. Classic Truck 'zine has given me lots of ideas and suppliers' names though my trucks are stock.