The first thing that I think should be modded to this car is the tranny. While this is the first auto that I don't hate driving, it still does not fit a car like this. Once you beef up the tranny, I wouldn't worry too much about adding power to the car. I wouldn't try it before then though. What I would like to do to my car first and foremost is stiffen up the suspension, get rid of most of the understeer, and do whatever I can to make it handle better. It's probably just personal preference, but I like a car that can handle the twisties of an autocross track much more than a car that can hold its own in a drag strip.