Larry,
It won't exist. SSB and SSC will be, and need to be rolled into the Touring naming convention, because what we have now is just plain confusing.
Before you all flame on: SSB becomes T3, SSC becomes T4 and the rules for those classes MIRROR the SS rules, so the class is aimed at showroom configuration. Additionally, you put in an allowance for Springs/shocks/tire size/weight on a car by can basis to allow adjustments among the slower cars to help steer away from car of the month.
Of course, the kicker here is a CRB and BOD that makes prudent and fair adjustments on a VERY LIMITED BASIS.
Current T3 cars get de tuned to fit.
Scott