Awesome project Tom!
My dad's first auto job was at the Hudson plant in 1946 so he built some of those 212cid flatheads
If the 212 is still there maybe you can measure the bore spacing and deck height? (Yup, the Gonkulator database goes back that far, always scrounging numbers!)
I think the 202 "Jet" engine is just a 212 with a smaller bore?
