When I got there most said "the car should do OK in a straight line, but on a course you'll be really slow... too heavy". After the race the story changed to helping me find my line for quickest lap time. I was obvious the vette did handle better than me, but my HP pulled me out of the corners quicker. ALot of vette guys wanted to know about my engine.
Alot of lookers and compliments on the GTO too.
My advice if you want to do this:
DO NOT USE THE STOCK RUBBER THAT CAME WITH YOU GTO - get a nice sticky tire.
Upgrade the sway bars
Upgrade the shocks
You'll meet some real nice people there, and they will help you with your skills.