I sent a messege to price a SFI diaper and he tried to explain that I did not need one in any class super class or not, I sure hope he isnt telling others this.
All .. Super Classes 8.90 9.90 10.90 and Top Dragster/ Top Sportsman classes do need a SFI diaper, and on top of that any advanced ET cars running faster then 7.49 1/4 & 4.49 1/8th does need a SFI diaper also...
