Hey everyone, I'm looking at modifying my stock predator 212cc. I'm not looking for anything crazy just something fast and fun. I was looking at the higher compression head, a thinner head gasket, and an upgraded air cleaner. My questions are is how do I tell if mine is a hemi style head or not, if all the components will switch from head to head, if I need a new fly wheel( I've heard not so good things about stock ones), and if in should switch to heavier valve springs. I have already made a header for it so I'm not in need of one of those now. Thanks for the help everyone. And if you guys have any other ideas or recommendations for this feel free to chime in, any idea is greatly appreciated.