I used two Hitec (2) 605's for the elevators, 615 MG on the rudder in the supplied mounting area. I would suggest you dont mount in the tail. I have a Saito 1.50 and have heard that I will need 12 oz. of lead in the nose. Keep this in mind. Engine size will determine the balance and how much weight if any. I mounted the throttle servo just behind the instrument panel because I used the mount in the plane for the second elevator servo. Ailerons are also 605. Do not use the supplied pull pull wire, buy yourself the Dubro 4-40 pull pull. Mines ready other than a spinner, trashed it.