well I installed a 15 counter gear, that really jumped up the gearing. now gearing is 15-38 with 20inch tires(big for 20s). I did one pass, I got 93.5 just shifting fifth then I backed it down, I need to make it handle better for anymore then that! Im more impressed with how well it handles the higher gearing then anything, also we have a drag track that's about 400ft in a local sand pit, its faster on that track with this gearing then it was with 14-42! I launch 2nd gear with this gearing and the wheel speed just sends it, I think with paddles 15-40 would be perfect