From 2012 to 2017 I built up a 1997 Mazda Miata as a track car- learned a lot about cars but got tired of wasting money and sold it when the engine blew up for the 2nd time.
Full build thread HERE
Eventually ended up with a supercharger and a motor from a 2001 Miata- made about 200 whp at 6000 ft of elevation. Big brakes, big cooling, big wheels/tires, expensive suspension etc etc etc. The car was really fast on track and almost unbearable on the street (800lbs/in springs will do that).