WANTED: 250cc Dirtbike motor preferably CR250

Im lookin' for a good running 250cc dirtbike motor. I would like to have a CR250 motor but any early 90's to present time 250cc motor would probably work.. I am needing it for a shifter kart I recently aquired. Please drop me an email if you have one or know anyone that might want to part with one!

Thanks,
mrquazy@hotmail.com