Tony, that is too funny. too bad I can't show it to my kids
I wanted to send it to the guys at the 'duro site but I would probably get banned!
And au contraire, it's 491.
It's a freshly scraped 1985 CR500 jug.
If I showed you guys the porting and the head your eyes would bug out of their sockets and I can't be held responsible for that.
Maybe this pic will make it's way around the world and back to the offices of the AMA?
Someday, my buddy will get my frame painted and I might get a video of this monster, just to show that yes Virginia, dinosaurs do rule the earth.