The Taurus Plus and the Taurus are two separate planes. The Taurus is Ed Kazmirski's pattern plane and on his kit box, written is "for .35 to .45 engines". The Taurus Plus is an Italian kit that was sold through Hobby Lobby International back in the early '90's. It sold for $339. The Taurus sold for about $24 back in 1963. I have both of these kits. My Taurus is still in the original box. I built the Taurus Plus and have flown it. I put an OS 1.20 four stroke in it. It is a heavy plane and I would not go with a .60 size engine in it. I think a 1.20 size engine is your best bet.