Road Atlanta Gearing on Dunlops

Hey Guys,



Ex Spec Miata racer here getting ready for the mitty. Have a '78 FF with the treaded dunlops anf if I get the car ready, this will be my first race with it. Assuming I have the 9:31 R&P in the gearbox.



Can someone please give me a good ratio starting point for the track??



Thanks,

Larry