OIC - you're THAT far down the road already.
A few months back I remember having a discussion with someone about having frames like this made - I mean really, you can get a TV tube for nothing, and provided you can get your hands on a compatible yoke, you can buy a replacement chassis from Alva amusements for $75 and you're up and running in a mint, burn-free monitor for your cab. You just need a frame.
This is one of those projects that really wouldn't be that hard to do for a metal guy, just plasma cut the 3 pieces needed, a few bends and holes tapped and you're good to go. You could just mount the PCB with plastic standoffs instead of using the little plastic strip.
Maybe we could petition Takeman to think about a project like this?