avoid the 02 wrx's there nothing but a headache with the trans issues. My outback is a beast in the snow with nothing but some all seasons and my WRX has never got stuck to a point we could not get it out.
Run e85 don't worry I made 375whp on IPS's dyno using a 1991 EJ22e short block that had 100K on it. I beat the fuck out of it for 10K and it cracked a ring land.
Also wernt you on a stock turbo? If so those numbers are a bit inflated