GT12 is 1S 13.5. If the class lasts is up to us sticking to the rules and keeping the racing fun and the cars competitive. This class because of its rules will probably become the biggest class for onroad. Door to door racing for 8 minutes is just enticing. The argument of having to buy all new gear is really not valid. Most guys will buy new just to have the best. When you can get a 1S battery, ESC and motor for $110 that is competitive I'd save my pennies for that setup.