12v generator off later model GM if you want it to look correct. Or a GM 1 wire alternator if you don't care.
12v coil and ballast resistor
12v starter solenoid. (6v starter works fine on 12 volts)
12v battery
12 to 6 volt reducers for gauges and motors (heater etc.) Check this out for ideas.
Change all your bulbs for 12v versions.
Wiring can remain same gauge but I always rewire.
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