The only real question I can see here is:
I've been doing a lot of plastic welding and using products like dynatron lately. It takes some practice. And while you cant find that type of specialized 3M product at say Wal-mart, HD, or Lowe's, it should be available at the local body shop supply store or online, (keep in mind the body shop supply store is not that Autozone or Pep-boys around the corner, you may have to ask around if you can't find one, I did. I can say with confidence that Turbocad's how-to'ish threads are great and cover all you should need to know to get started. Just don't expect perfection on your first try. I produced a few abortions, and I'm hoping this next baby actually gets delivered. Maybe start with a smaller (less waste) project first to get a feel for it. After all of this practice though, I have to say I probably won't even consider doing a fiberglass-on-plastic dash mod from here on out. Fiberglass has it's place though.