I have a powerfist 212cc engine from princess auto ( Pretty much Canadian Harbor freight) And I'm looking to buy an upgraded camshaft. The journal on the cam itself measures exactly 0.5500. Does it match the Predator 212 Hemi or Non-Hemi? Or something else? Also I have a stage one kit with an exhaust header, 18lbs springs and a billet flywheel. what is the best camshaft to get without modifying anything else?