Shhhhh! Don't tell no one. I am still secretly lusting for no spooge or smoke and some more torque too. I also think compression braking is cool. However! My YZ250 is so cherry with aftermarket parts, re-valved/re-sprung suspension, and a number of woods focused mods. Some will be moved over and others prolly re-purchased. In order for this to be a go I would like to directly bolt on my suspension and upper triple clamp if possible. I have a 2007 YZ250 smoker and am considering the '08 or '09 YZ450F. I will act very slowly on this but just want the information to ponder. I would move the 450F parts over to the 250 and then sell it. The '08+ YZ450F is the version where the OEM quiet shorty silencer was installed, right?