Early A=Gas Spiller!

Something like the Stant instant fill cap would probably solve the overfill problems. They don't seem to make one to fit older cars though. Maybe someone could find another manufacturer that sells a similar product that fits older cars. Its something I would only use while fueling and not leave on the car all the time. Maybe even take a cheapo gas cap and drill a hole in the middle the size of the pump nozzle would probably be about the same thing.