I think Evan's carbon fiber trunk lid puts him into Street Unlimited.
Here's the competition:
[img:e6ee35f541=600]http://doink.net/gallery/Reno%20Meets/03-04-27%20SCCA%20Autocross%20at%20Stead/DSCF0058%20SU%20Porsche.JPG[/img:e6ee35f541]
Evan, you may want to do what I'm doing, and see if you can un-mod your car down to STX. I think that means finding a stock trunk lid and removing the boost controller on race days. Without those item's I think you'd have a very competative STX car. But it means work for every race weekend: swapping the trunk and taking off the MBC, and possibly throwing on some dedicated race tires.
Now then, how legal is an IC waterspray system in STX? Not very is my guess.