Just got my 06' SM last month, Sure is a fun bike. So far I have done my own spin on the BD taillight mod, flush mount rear turn signals, FMF SM jet kit. Got rid of K&N after it didn't fit right, very loose in the air box, made bike stumble, hesitate around half throttle. Put stock filter back in and it runs like a champ now. Just posted some pics in my garage. Glad I found this site, you guys are full of great info. thanks