Charlotte County Motorsports Park (Punta Gorda, Florida) is in the early stages of developing a Spec Miata seires on it's 3/8 mile oval. There will be prize money and it will be based on SCCA/NASA rules. How much interest is there? Might be the basis of a good article or two.
I am in constant contact with the track owner and as soon as more info is available...I'll pass it on!