A friend has a '64 Ford 2000. His father bought it new, and always told him it was an 8-volt, positive ground. Everything I can find says they were 6-volt, positive ground. He has put an 8-volt battery in, and it seems to be running fine. His lights and guages don't work anyway, so that's not an issue, but how about the starter, generator, and regulator? will 8-volts mess them up? HELP!