I have a 05 450r I have the compression bumped up I am pretty sure after racing it for the last 5 years I need to do something with the carb what is the best carb to put on this motor? or just keep the stock one and totally rebuild it. also I was wondering about whats the best cam to run I race cross country races so I want more low end power vs higher rpm power that's why I have just had the stock cam up to now, I have read where the 450 bike cam is good any body with this experience that would like to share there experience I would really appreciate it.