Don't worry about us, do what you want.....and have fun.I am to old for the the need for speed. I could port it but no, I just was thinking of going back to the 1960s when I might have weighed 40 pounds. I know we could get 18 hp from a 6.5 hp preditor engine for racing. But those days are over. But I don't want to modify a old classic engine and keep it stock for the family to ride. I have a few of the Mccullock engines that would be a good choice for that. Thanks guys with great ideas though.