I would expect 4-5 to show up. Plus the class 9's are the first off the line at Vorra races. Class 9, 11 and UTV's start 1 full hour (maybe a little more or less depending on track length) before the rest of the field. And you get a 9-hour time limit instead of 8. Think about it, a full lap or more of racing without looking over your shoulder.How many 9 cars?