Can A P Plater In South Australia Drive A V8?

Just wondering what the rules are for p platers when it comes to what cars they can drive. I get my p's in january 2010 and i hear the laws are changing but im hearing alot of different things from alot of people and i just want the straight facts. Considering buying a V8 holden calais but if i cant drive it.. links would be good aswell. thanks.