I am the original owner of this car, and can tell you after 10 years, its still an awesome car. The balance/handling is superb with the IRS. We take it to the SVT on-track events every chance we get, and its always a blast to drive. My kids can't wait for me to pass it on to them, but that's not going to happen any time soon.
Handling and Power. Its also an attention getter. I can't park it anywhere that someone doesn't walk up and want to talk about it. Considering the number of on-track events, this car is also bullet-proof!
More power (can never have enough). Wider tires on the rear are a must.