Why don't you put it to your local BRCA 1/10th offroad Regional rep and run the trucks at the same meetings?
We run SCT's at Mid-East BRCA Regionals as a support class and its popular.
I'm a big fan of SCT's but wih Buggy regionals and SCT nationals to race at most weekends plus oOple Race thats most of the summer spoken for...
i personally wouldn't support another SCT championship and think majority of SCT national drivers would probably feel the same, a lot of us SCT racers run buggys as priority classes