If you want to mod the car, there's no reason to fuss about being able to run in Stock class. You could just use the guidelines for Street Touring as you mod, but run in Novice until you have a feel for the direction you're taking the car.
Classes such as Stock, Street Touring, and Modified only denote the level of work that has been put into the car, not the skill level or experience of the driver. Dean, for example, is one of the most skilled drivers we have in the group, and he's running a stock Miata right now for fun. Noobs run novice, all else run the class that they've built their car in to.
