I'd venture to say that New England Region, which, JUST added the IT-7 class in 08, has about 6 or 7 guys who run "regularly". It used to be much higher 7 -10 years ago when the RX-7s ran in ITA, but it was obvious that the 7 couldn't compete with the CRX, Integra, et al, and the ITAc wasn't able to do much about that. (bastards! )

I know that in Norcal, there were more ITA RX-7s running a couple years ago than any other model than double dipping Miatas at the race I observed.