Well at my local outdoor track during the last races of our season we had at least 6 4x4 sct's running and not everyone was there. Just depends on your local track I guess. I don't see why they'd die off. Its a good, fun class.
Taco, I may be able to get my brother to join us since he has a Team C sct. He will have to borrow a transponder of mine but we could at least get 4 people in that class. I may of talked a friend into joining in on the fun as well. Maybe, we can get that class going. I'd have to turn my truck WAAAAAY down though. Running a tekin 4600 in it lol.