Hey mx/sx bikers out there, I´m a newbie to the sport but pretty handy mechanic and just wondering if the 06 RM-Z 450 is tough enough to compete with more modern FI mx/sx bikes out there, being pretty stock. I found myself a nice looker but hoping I can compete with this kind of bike if I change the head, valves, valve seats, cams and what not.... ANY SERIOUS RESPONSE WOULD BE GREAT!! Thank anyways