I think you're in at least street prepared with that brace, bummer. The problem with SCCA is that all the rules are very strict and to the T. I'd advise you to leave the car as is and run with some of the other local clubs. More runs, friendly people and way less time corner working plus looser classing rules so you can still be competitive in your class. For instance S2000 club events groups all Miatas together regardless of mods (except race tires). BMW club classes all cars with a 2.0L or smaller engine on street tires so you'll race against other Miatas, Civics, Neons, MR2's etc.