STARS. Southern TransAm RegionalS
It has been around for a few years now and is growing every year. I think it is usually in March. It looks like alot of fun. If you are going to be in the area I'd say go for it.
EDIT: I just checked the website and it looks like the show will be in fall 08 instead of the spring... Hmmm
http://www.starsfl.org/