I have a 2001 DRZ400s that I converted to SM and have been enjoying every single freak'n day! I have a 2000 DRZ400e in which I'm trying to make street legal by the beginning of next month. BUT, I just saw the 2008 RM-Z450 has fuel injection, a 5 speed!!!! and is only 224lbs If it's an electric start or can be with a convertion, and has a good enough stator/chargind system, then that is the bike to convert!!!... if it's reliable. I wonder how reliable that engine is compared to the DRZ400?