I am looking to build my motor shortly, my components will basically consist of a 11:1 or 12:1 CP Piston and an X-4 Cam. That is basically the generally best setup I understand. I do not want to make 65RWHP just have a strong, reliable,and fun bike that will be useful in all situations. I am going to keep the stock carbs and am not really looking for any porting/polishing. Can you guys or gals help me with some advice, giving me all the information about a setup close to the one I want to take... What power gains will I be expecting with this setup and one of my main questions would be, do you have to make valve train modifications to use the X-4 camshaft? Any information would be of great help.