2006 Saab 9-3 Aero

I got an 06 saab 9-3 aero and i know nothing about this car. I was wondering if there was someone who could fill me in on what id have to do to put a larger turbo and a new exhaust system in it. Im new to the whole car scene and i dont really know what im looking for. i have checked out sites all over the net but i cant find anything for the car. Any helpful info??????