Agreed. The K3 is a great buggy engine. Nice and linear without lagging and grunt to pull a large jump right out of a turn. Very manageable, you want more, pull more trigger.
Coming off a Ninja B03/ OS2101 this motor matches bottom to mid but carries a touch more top. Also seemed to have better mileage for being fresh also, matching the best runtime I had with the OS but the K3 only had a gallon on it. Runtime should only improve.