sorry i run a non cut tire 38.5 11.5 15 i run deep bog pits and real dry dirt drag side by side. what I'm trying to do is get to my final faster i should be OK with the smaller pinon I'm using a stock 10 bolt now with no problem i just got a 9in front with 60 outers that's going up front any help at all on what gear to try would be great thanks for all your help