Hey, I've been looking for a good motor and i have decided on getting a kit from ThatsDax.com . I'm gonna mount it on a KHS montana mountain bike and get a 1 gallon gas tank. The only thing left is which kit to get. I was first thinking the regular F80 which is a 80/69cc motor. I'm pretty sure its just a normal 2 stroke kit. However, i found the F80 "Little Devil" kit. To my knowledge its the same kit but, uses upgraded parts. Has anybody had any experience with these kits could you say the pros of the new kit.(Higher MPH, Higher MPG, Better parts, Etc). As well as if ones more difficult than the other. Thanks.