Im building a P-51 that is being converted to Dago Red. I plan on putting a magnum 1.08 or .91xls 2 stroke in the nose. it will weigh 10 pounds dry. it has a 62 inch wing span. this is the old sig kwik built kit--thats why its so heavy. If you are going to get a big engine--you mght as well go all the way.