With Montana title in hand, I was able to title and register my hmmwv in Texas today. It was a little painful. Only one of the 3 people in the office knew how to deal with military vehicles and I waited over an hour while he was dealing with a guy who had bought a van from 2 people who died and there were power of attorney issues, etc. When I finally got to talk to him, it still took a while, but wasn't too bad.
The only hiccup was that the former military vehicle registration uses the same process as antique vehicle registration and the system was struggling with the hmmwv being less than 25 years old. Even though there is no age restriction on former military vehicles, it sounds like most of the vehicles they deal with are older than 25 years and they don't typically run into this issue. He had to make a call to someone to figure it out, but it's all titled and registered now as a 2000 AM General.
Rather than going with the military specialty rear plate, I opted for "military vehicle stencil number" as my plate type. My plate number is listed as the USMC registration number stenciled on the back of the truck. There are no requirements to display anything else as long as the markings are clear, but I have to carry my registration sticker with me in the truck. I'm also planning to carry the TXDOT document that explains this type of registration in case I get pulled over by a confused cop. I confirmed with him that I can change the plate type any time I want and I can also switch to a regular road registration, but I'd need to get it inspected first for the regular road registration.
My biggest concern going into this was that the Montana title from GP has "OH" as the style of vehicle. I think "OH" technically stands for "off highway", but the guy doing my paperwork didn't mention it and they used "pickup truck" as the body style for my Texas title/registration.
I'm happy to finally have this done and I think (hope) my truck is pretty well sorted mechanically. I also hit 520 miles today on my odometer, so my 2009 rebuilt engine/trans are officially past their break in periods. Now I can stop babying it and start racing people from stoplights and stuff....
I really like the clean original look without any license plate or bracket in the front or back. Hopefully the lack of plates won't be a problem and I can keep it this way. We shall see.