I ordered a SM 190, looks good and the reviews for the dirt version of the Daytona engine are pretty good. Ill let you know when i get mine. We race in the parking lot of our dealership EuroCycle Las Vegas on Wednesday nights and my service manager is ruling the races with his kx65. I have been running my buddy 50 scooter that has a Malossi water cooled cylinder which is fat but i need more power than that scoot can provide! Thus the 190 coming!