You know, I put expensive, long lasting, made for big rig diesels, orange coolant in my deuce and I regret it. Not because of the quality because surely it is excellent, but I don't think it was worth it. Also, regular green automotive antifreeze coolant is so much easier to find, and cheaper and then I wouldn't have to keep track of two separate coolants in my garage - I could have just kept extra of the same one that all my vehicles use. Plus, you feel less worse when you spill any or it leaks from the truck for any number of reasons.
So from me, go with regular green coolant. It's what the Utah National Guard had in the truck anyway before I drained it and flushed the system 3 years ago.