That's a 400....had 1 of those too. Although the wheels are sized differently, same 7 spoke design. My last wife rode the one I had, until some drunk jackass almost hit her.... so we then gave it to her Dad. He & I rode to Castle Rock WA back in '94 to watch the 1st Flat Track national in 14 years...since Mt. St. Helens blew. My father-in-law used to flat track a pumped 850 Norton back in the 70's, so he had a blast on that trip...he was like a little kid in a candy store...couldn't sit still to save his life! This shot is from our campsite only a few miles from the race track...