So for whatever reason, I decided to take off my engine and mount a dynamax fan on mine. I think I'll need to add a pound of lead in the nose since the engine/fan will sit at the rear and the pipe will extend and hang off the stab. I just finished the mount for it. I really don't know if this setup will be feasible with the addition of the counterweight and the thrust output gained. First test, I may not use any ducting. I'm still trying to work some issues out. We'll see.