Guys... check your springs. The memo from John Leverett (Director of Engineering/R&D Panoze Auto Development Co.) states the school cars have 550lb front springs and 350 rears while the GTS cars have 600 fronts and 350 rears.
Tonight I scanned through my service logs and saw that back in March '06 my car had new shocks (at 230ish hours, 350 on it now) and springs put on, the invoice stated 4 200# H&R springs for the front and rear. I checked the part number on H&Rs website and they came back as 200lbers.
I went out to check the car and found that I have a mismatched pair of 350lb springs in the front and the stated 200lbers in the rear.
LF - H&R R25100350 (350lb coil spring)
RF - Eibach 1000.250.0350 (350lb coil spring)
LR - H&R R25100200 (200lb coil spring)
RR - H&R R25100200 (200lb coil spring)
So Gary Jones was right... the cars has rather soft springs/schocks. Will be looking to upgrade them along w/ a GTS spec rear bar