I just got done converting a 2008 yz450f into a fully street legal supermoto and I have 2 questions. First, is there anybody who has installed a key switch on there dirtbike? I don't want electric start just the ability to curb thieves on the street. I get nervous parking it on the street knowing anybody could just kick it over and ride off. I know just about anybody could load it up in a truck and take off but you could say that about any bike. Second, anyone ever replace the air box and gas tank in order to update the plastics? My other off road bike is a 2014 yz450f and you really notice how outdated the shapes are when they sit side by side. I really like the 2011 white and red yzf. Off the top of my head I think the 06 to 09, 10 to 13 and the 13 to 16 are interchangeable. Is it possible to go from 08 to 14 if you change the air box and tank?