i have a nos me460 barell head piston and rings for sale if anyones intrested $900 barrell is perfect crome bore is spot on kit will fit 81 cr450 and 82-83 cr480 im running a 460 kit on my 82 480 and it really has improved the ride of the bike i think a standard 450 head will work with these kits but an original head would be findable pm me for pics
