Can I fit a kx500 engine in my '85 230 QuadSport?

I am looking for power and I figured go big, right?

 

I'm sure you could get it in there with the right mods to the frame. doesnt sound like it would be easy either. If the KX500 isnt counter balanced then you will have another problem. From what I have read, A big bore engine like that, that doesnt have a counter balancer on it will shake a quad style frame to death. GJ