I emailed the event director to see what configuration they run at Nashville. I'm pretty sure it's the same one that the mustang club runs by watching the video's he sent me. Here are two video's of the Nashville configuration for anyone interested:
http://youtube.com/watch?v=WzfFiNEtkdQ
http://youtube.com/watch?v=ZyceB3ASByg
I read the rules last night just to see what to see how everything is classed. I'm pretty sure if I throw a hi flow cat and street tires on my T78 I can run the "street class"

Dan, I'm pretty sure you could lay waste to the street class.