I read my post after I posted back to you, and I came off rude I think, and didn't mean to. I am not sure if you understood one thing. I have a set of heads that I got from a friend(machine shop owner) #3973370. They were just done and milled. The engine I have is stock with 76cc heads. I was gonna put these new heads on it, and a cam, intake and carb change. I have headers(factory) and a test pipe for a cat. If you feel knowing that the crane cam you suggested, I will look into. Will the cam you suggested give me a notiable difference, compared to stock? Oh, and these heads were only $250 done, that isn't bad. would I get that much more noticable power if I spent the big money on the AFR heads? I am tring to get the most bang for the buck, but at the same time, I don't want to spend an extra $1000 on heads that might only give me 30hp, verses $250 for 25hp, see what I mean? I was tring to be in area of 300hp if possible.