Question full voltage?

4 pin boxes don't need the dual ballast, it's not even connected. It connects to the 5th pin. If the 5th pin is not there physically, then only the single ballast would be needed even in a full stock system.

You will not burn the wires by taking out the resistor.

I was running a Wells stock replacement box with no resistor for a few years and it was just fine. I had a universal accel coil.