The boss has a couple of them on the ranch. Still have low hours, but have been great. They sure beat the carb'd 650's......
The carbureted 650's still have the best flowing heads of any of the V-twin Kawasakis.
There is a firm in Canada which can get these engines to over 100 hp and they use the 650 head on the 750 cylinders. Fundy Motorsports I think it's called.
The only issue with the carbed 650's is that the chokes had a propensity for sticking.
I know my solid axle 650 will beat the 750 IRS on powerline ROW's, and through forest trails. The solid axle ones handle like a sport quad, far better than the IRS models.
Since recreation riding dominates my use of the quad I value the great handling of the solid axle Kawi's over the ground clearance of the IRS models.
I proved to myself that my solid axle Kawasaki can go anywhere the Big IRS Arctic Cats can go but I just have to attack it more aggressively. On forest trails the Cat gets left in the dust.