Maybe A.J. or Bob George will stop in to explain why or what classes were chosen but it usually comes down to how many racers each class has. I know Josh complains about low car turn-out for his heads-up class every year. And I also know MANY guys pull out and don't race on Sunday at many of these long weekend races. The NNS guys are a strange breed indeed and always require a pit spot down by the restroom at Monster Mopar. (bladder issues I think) I've parked in the SPECIAL "reserved parking" at Norwalk just to get the guy up out of his chair to throw me out. LOL.