Thanks in advance for your advice. If you were building a new project for IT today what would be your choice and why?

ITS 2nd Gen RX-7
ITA Miata
ITS E30
ITS (ITR?) E36
ITB? Honda CRX
Acura Integra

I am planning a switch to racing with SCCA in New England after my relo from CA where I race with NASA. My current car is not legal in IT and not competitive to build up for EP. Used to run a first gen RX-7, so leaning Mazda because of the Comp program. Will try to buy a built car, but if I don't find the right thing I'll build one.

Appreciate advices.