Hi Allen,
I like to build planes for my vintage engines if the plans show the engine I want to use.
I got plans off the internet for Dmeco's All American stunt trainer. This model has a WS of 26" and shows a McCoy "9" mounted along with an OK Cub .099. I want to build it for my OK engine.
The plans say "Performs the full stunt pattern with ease" and looks easy to build.
Orv.