Someone else would love to have the rest of that '29 or '32. Get a Rat Roaster and we can work out a trade. I'd love to put AMT's '32 Phantom Vicky wheels and tires on it. Keep the SBC, too. I want a Ford mod motor in it. No joke. Let's make a deal.
I went to a model contest in Austin this morning. I got a Renaissance 1/24 Ford Mk IV, Protar 1/9 Honda RC166 (the 6cyl racing bike), and a Gerstner tool box. It could use a little cleanup, but I've seen them in worse shape for more money. It will hold tools for my Sherline lathe and mill. I'll see if I can get pics later today.
I have a small vacuum former that you can borrow, if you want. You could make a master and pull one over it, or you could make that hard frame for the bottom and blow mold one. That's how a lit of the real bubble tops were made. My vacuum former has PVC pipe fittings where the vacuum cleaner hooks to it. I could send a hard extension that I use on my Shop Vac or I could change it to something better for blow molding. I'm thinking of a PVC extension with a schraeder valve so you could use a regulated air/CO2/Nitrogen tank and figure out the right amount of pressure to use. I had never thought of blow molding a model bubble top until I read your post. I may have to try it for an idea of my own.