A mechanic that works with my buddy has a bike for sale, it is a 1975, 750 honda four I went to talk to him, oh no wait, I guess it's a 550. then it was a 450, then it was a 500, now it is a twin. Now I gotta go just to see what the heck it really is. He cleaned the carbs so you would think he would know how many there were. Maybe it's a 500 single with the two exhaust pipes. Any bets? He now thinks it's really rare so the price is probably fluctuating upward.