I can tell you from my personal conversations with The Wizard, that the original intent was to take IT National. When that failed, Wizard said "eff it" and turned his attentions to bigger things....making B and D Prepared National, changing it to STO and STU, and adding a suspiciously-IT-Plus-like class, Super Touring Light.

Say what you will about The Wizard, but looks like Mission Accomplished to me... - GA