sakin sir is puwede naman yan kaso lang sir! is dapat talaga may cams ka regrind cams or may after market naman pra lumabas ang power ng 68mm block sir..i suggest kung guato mo lang ng pangdaily tapos malakas.is stock piston lng tapos port carb cdi..malakas nayan malayo pa sa sabog..sana makatulong sayo ride safe