12's haven't been hit yet, even with THOUSANDS of dollar's into them, but the biggest hp booster is the turbo kit from ADC, www.arizonadynochip.com, besides that you can jsut do simple bolt-ons such as intake high flow y-pipe, and headers for a few, jsut read around and you'll get it.

~Alex Ex- SVT Driver627 MUST SELL!!!LOCAL: Pre-98 MOLDED trunk Polk db speakers Corolla parts LED Underbody Kit PM 2000 Green CSVT gone on 2/17/06 2001 Toyota Corolla (SHE RUNS!!!) 1989 Mustang LX 5.0