Sounds promising, I have a 67 Camaro myself as a fun car.
But the feds will drive all these off the roads via legislation, most likely via tailpipe emission testing.
It’s possible you might get a 1000 mile / yr historiacal exemption or something similar, but no way they’re gonna let you dodge the bullets they’re firing.
I am aware of the risks as you are. But if things get that bad, we may be in Thunderdome territory anyway, in which case enviro laws will be broken by everyone.