As the other CD for the Red Barons races I run easily in the 140 to 145mph range with my P-51. Yes that are highly modded. We clip and carbon fiber the surfaces, smooth them as much a possible and most guys run HIGH nitro! I personally run a Stock YS 120 NC on 20/20 fuel and can easily break out of the silver class. I have run in the low 1:40's in the gold class with 50/18 fuel. It comes down to how you fly the course, Low, straight and tight will always beat high, long and wild. As for the props, sorry guys you'll have to figure that out for your self.
As for the top dogs at our races, one guy runs a P-47 with a highly modded YS 110, Others are running YS120SC's in Mustangs, Spits and others are running screaming 2 strokes. Pick your favorite and come have fun. [8D]