Has anyone tried an 8 volt battery in a 6 volt early Ford V-8. I have a 40 ford Deluxe coupe and would like to improve starting capabilities when hot. I have had the starter converted to a high torque and still having issues. To use an 8 volt battery do you have to do anything more than adjust the regulator. What have been your experiences. I am trying to not convert to 12 volts.