I thought you were kidding in the 3d forum. Apparently you are serious so here is a straight answer. A Rossi 40 likes to scream - 16,000, 18,000 rpm. 3d is about flying at 1/3 throttle with enough reserve to pull the plane straight up, ideally accelerating. Thrust to weight of 1.5 is common. Lots demand more like 2. I fly 3d a lot. My favorite plane are 5.5 to 6 lb Mojo 60's. I fly them with 4 stroke (Saito 100) engines. I sometimes fly 4 lb 3d planes with 2-stroke engines - .46 to .50. I like 4" pitch on the smaller planes. 12" to 13" diameter. 60 size are a lot easier to fly.

A Rossi 40 on a 3d plane is like a Porshe engine on a John Deere tractor. You could make it go but why? It is totally wrong for 3d as I know it. I like Porshe and I like John Deere, but not on the same machine.