...suggest acquiring a "faster car" (ie SLK32) that benefits from "total engineering" to be a faster car...

that way you'll get a complete package of "faster": braking, handling, speed, etc. - - as well

good luck
-fad

PS- I see lots of people trying to make their car faster...and each day also see not too many able to handle just everyday normal driving challenges.....for those whom like speed-, suggest taking a track skills/driving course and spending time with your vehicle on the track (its fun, inexpensive, and alot safer for you and your car)