didnt say it cant be done or that a few havent been fast but its going to cost as much if not more then just donig a cheetah, which is what he said he wanted to do to eventually. if he were to go with the stock cyl 10mm first and all the work the goes into it the only thing that would carry over to the cheetah would be the crank and cases, leaving him then to come up with a few thousand more for a cheetah cylinder, pistons, head, intakes, reeds, pipes....so hed now be building 2 motors basically.