Some platforms like the P210 series, have the potential for more. The original Engine is a reciprocating Continental TSIO-520-AF with 310 HP. Over almost 15 years the plane manufacturer O&N bought airplanes and transformed them to a real high performance aircraft. This is done by exchanging the reciprocating engine by a RollsRoyce turbine. A Single Engine Piston is converted into a Single Engine Turbine (Turboprop). A conversion is NOT an experimental airplane. It is a certified STC Plane in normal category. (as well by FAA and EASA).