I've done the 12vlt on 6 vlt starter, and you would want it to fire up good, as you would have your points , timing, and plugs good. What about the windshield wipers; resistor?
I have spotted a ww2 ford bomb truck, at undisclosed location. Haven't brought myself to obtain it becouse it's missing the pulley, and the ibeam is cut at rear. Any ideas on location of a pully?