To be honest I really don't have a problem with other groups, but then again I have never run with a bunch of SM's either. It was REAL interesting during a test day at Road Atlanta last year with me in the IT7 and the guys running the Trans Am series running together. I found out they were not that much faster in the turns, but once they reached a straight, fugetaboutit.
One thing about that thread is I now know where Matt Weisberg went.
Bookmarks