Thanks everybody. I will now reward your good and thoughtful advice with more questions.
What about ESP? (Street Prepared) Does the "suspension" have to meet OEM specs? Can the car be lowered? My next purchase, probably in October, was going to be new struts/springs. Don't really want the chip.
For the stock classes (S or SP), does the tire sidewall have to be stock height? That is, could I mount 50 series rubber on my stock 15" wheels, even though they came with 60 series? Do the wheels have to be stock diameter?
STS still seems a bit far off, but maybe somewhere in the future. Thing is I'm starting with an SE, not an SVT, and I'm not sure I could be competitive without maxing out my mod options in that class.
Thanks again.