I thought so, but no, handling is actually improved with just basic stuff. No problems braking, I have already done some chassis reinforcement, particularly to the upper wishbones, and the compliance bushings. The uppers have delrin offset bushings for extra camber. All the studies I've seen show the contact patch is not affected by toe. My car is in street mode right now, there's no track stuff I'm doing for another few months, as I'm just finishing up other commitments. I have a trunk with a huge wing, a custom diffuser made of aluminum and an underbody tray. Right now I'm using a modified plastic splitter. That's the only track thing that's on the car now, aside from the suspension and chassis stiffening. It's just an experiment. When I have time, I'll take it to the track bolt everything on and take some pictures.