Yeah, I'm kind of surprised about Lexan. I'm new to racing, the car is ITA/7 but the simplest solution would be to run NASA PT. Lexan is allowed with no points. They run 5 events at Road Atlanta, which aside from Barber, is the closest track.

That may make the most sense. Then I don't have to replace with glass which I know I will chip(call me paranoid)!