Save up and go Turbo, with a 1.8l you have more turbo options, you can steal some Honda and Nissan parts to piece together a turbo.
I have a 2.2l and I can't get it over 150 HP, and it's pissing me off.
So save up, or just wait til' 2003 and get a WRX-STi (276 HP turbo) DROOOOOOOOOOL.....