Would a 250r engine fit in 200x three wheeler?
No, a 250r engine will not fit in a 200x three wheeler. The 250r engine is much larger than the 200x engine, and it would not fit in the frame of the 200x. Additionally, the 250r engine has a different mount pattern than the 200x engine, so it would not be possible to mount the 250r engine in the 200x frame.