the guys at reagal performance in Cedar Park don't really spend much time on the forum, and i dont even think that they are registered. the guy that you want to talk to is Tim Blessin. you could also talk to Mike Hogan(also extremely knowlegable), or James Kay. they dont usually get to the shop until about 6:00 pm. the number is 260-7010. Trust me, these are the guys to talk too in the austin area.
BTW- i am in WAY north austin(liberty hill)
-jeff