Ruizmilton,

I think I have the FRP horns. Dreamworks has the exact horn by Airpower. Here is the link:
http://dreamworksrc.com/catalog/prod...oducts_id=1019

These horns should work if I install them properly. I already put in a piece of maple with hysoled it into the bottom of the rudder. I pre-milled the maple so I glued the horn in at the same time. It is downstairs drying as we speak!

Jim