Can anyone explain something about degree or lift of camshaft??? Different kinds of camshaft in the market now for example CMS, DBS, IKK, Marathon, Kawahara and blah blah blah... What is the best camshaft for supporting mid to high (+/- 9000) RPM performance (not planning to change CDi)... If I change camshaft do I need to do something about the valve clearance??? THX
