are there any aftermarket parts out there yet??? STi specific I mean. I would hope no one would try to sell WRX parts to an STi owner. I have a wagon, and i love my HKS Carbon-Ti exhaust (3"), but when I can afford to supplement my stable of cars with an STi, I would love to see HKS make an STi specific design of 4"!!! (or at least 3.5) any thoughts???