Here´s my comment on this machine- the 1974 Kawasaki 900 z1- The bike was a piece of crap. It could do one thing--go like hell other than that it didn´t amount to much. Handling?--Terrible - Wouldn´t hold a line through a corner- was all over the place. If pushed hard it was scarry. Ride Quality- Terrible- Rode hard as hell--almost like it had no suspension. Every time I rode it I got a back ache. Vibration--Terrible- couldn´t even see through the rear view mirrors. Noise- Terrible- Above 4K rpm it sounded like the cams were going to grind through the top of the engine. Worst motorcycle I ever owned.