In San Diego, The Lap Factory and RC Racers run GT Spec with TCS rules including the Reedy 21.5 fixed timing motor and 5.74 FDR (RC Racers i think allows 5.2FDR). Spec tire is USGT Gravity's.

Its a fun class and good for beginners after they graduate from rookie. I think its a perfect class to get them ready for USGT.