I have a magnum .61 which is a bored out 52 2 stroke. Do they make a conversion for it... Also if not What i=I am planing is putting a diesel conversion in a Great Planes Stuka. It calls for a 61 2 stroke / 91 4 stroke... Thought this would be perfect match... No one flys a Stuka or diesel at my field. Any sugestions welcome. Thanks