volt generator in 12 volt system

[52 Ford]

I plan on using my rebuilt 6 volt generator in my truck on a 12 volt system.
I know i need to get a 12 volt regulator and coil.
Do i need to change out my starter solenoid, headlight switch and horn relay to 12 volt.
What vehicle year should i tell NAPA i need the above parts for 1960 F100??

I know about changing the bulbs and resistors for the gauges, but what about the starter solenoid, horn relay and headlight switch?