Keep the car but don't throw mods into it. You are going to loose alot of money if you do this (I'm pissed that I have thrown so much extra s*** into mine).
I'm driving mine for the next four months and then I'm getting something that is worth buying (Good-bye Mazda) and dumping money into.
Simply put, drive the car and save your money until you can walk into a Sub/Mitsu dealer and write out a check for that STi/EVO.