1st, Nice truck. I love that you're keeping the logos on the sides. Preserves it's character.
2d, enjoy Guam. I lived there for 18 months in '89 and '90. Did some traveling from there, but not nearly enough. If you're into War 2 history, you'll never be this close to some of those sites as you are now. I forgot about the Island Wide 35mph speed limit. I had a Honda Interceptor for a while when I was there. Nimitz Hill was a fun ride up and down.
3rd, None of our work (USMC) vehicles had AC in them. We survived. Of course, I was 18 YO and about 140 lbs so it mattered less. Heck, even our barracks AC didn't work a lot of the time. I had the bike and a Nissan 200sx that I bought for 400$. We referred to it as a Guam Bomb. Had to do a headjob on it to get it running. There was a good machine shop in Agana, although I had to get the head gasket set from the states. I'm sure the internet has helped with most things there, like everywhere else.
I'd love to go back and visit some day. Looking forward to reading about your progress on the truck.