I am new to autocross, but not new to racing. Twenty plus years road racing motorcycles and go karts. I've got a 1990 Miata with HD front and rear sway bars and Tokia gas shocks with Flyin Miata springs (1.00" drop). It also has a cold air induction and a momo racing seat. I have a set of 17" wheels and another set of 14" wheels. I was planning on using the 14" for the race tires. What would be the suggested tire size and choice. I have been considering Kumho V710's 205/55-14.
Also what classification would I be requitred to run with these types of modifications. Any info and set up recomendationswould be greatly appreciated.