Well, I answered my own question and the answer sucks.
Virginia DMV and State police both say that if I build my own car from scratch (no existing frame, body or VIN), that it would be titled as a 2014 vehicle and therefore subject to all the safety requirements of that year, so it would have to have airbags, emissions system and everything else a modern car has.
SO, it doesn't look like I'll be building my own car, I will keep and eye out for an existing OLD body with a title but they are few and far between around here.
so once again, Virginia has proven to "not be the place to be"