hurtenstein

Hi there, Im in Perth, Western Australia and own an Evo4 Club Spec. WRX. Very interested in making it go faster and am looking for ideas. Im new to subarus and are unsure of whats out there, ive heard things about Twin turbo setups and a 2.5 litre motor? If anyone knows about the motor range out there i'd be stoked. Cheers, Happy Driving