Well, that is about it, the cat rules for ST eliminate being able to add any of the off the shelf headers headers for a duratec. Spend your dollars on wheels and tires if you want to go faster. If you really want a bit more power you could add a dyno tune.
Parking Lot Hero
2008 WRX daily driver
2003 ZX3 23D Autox Car 42 FSP
"Hella Functional - Raced, Not Hard Parked"
Last edited by wrc_fan; 03-02-2011 at 06:51 AM.