This is the one I used but I do not have the stock motor in mine, this is for a 4Mil shaft. I don't know if you can put a collet type on the stock motor shaft as it is threaded.
Also I extended the nose 1/4" to avoid moving the motor mount, so a 47Mil spinner would be a better fit (I just measured the stock spinner :-) ). The prop I picked up at the LHS.
Bob New wings??? That mod is so easy and I have seen your work, your kidding right?
Mex The only other thing I can think of would be to use a standard external horn and run the control line to exit near the back of the fuse. The same way rudders are set up on most models. Probably the easy way out anyway.