Vespatronic on Vespa SS180

Hi Everyone

I have a Vespatronic kit for my SS180. I think I can sort the wiring ok, the question I have is concerning the battery. The red & white wire from the stator goes to the regulator supplied with the kit, then from the regulator to the battery. my question is this. The battery on my SS180 is 6volt is the power supply coming from the regulator 6 or 12 Volt? if 12 volt can I get a 12Volt battery to fit my existing battery box.

Many Thanks