I found some time to finish the tank up for the '40. I added a baffle before everything was welded tight. Since the outlet was at the front of the tank for plumbing convenience, I didn't want to starve it when the truck was accelerating.
I also found these weld in tank fittings at mcmaster.com that made things quite a bit easier.
I added some mounts to securely attach it to the bed frame. I originally wanted to attach to the chassis, but the way I built it and where the tank is located, it would have been very difficult to do without adding a unnecessary cross member.