A car like that (and my 68 fish) can be dipped in acid and then dipped in primer. A OEM foreign car place in MS does that and I will probably take them up on it. Gotts to replace the floors first.
Remember Earl Schieb? $29.95, any car, any color. We blocked a 63 bug and had it painted there. Paint lasted a long time until I made a Baja Bug outta it and painted it again, in the driveway. :D