Here is the link for the manufactour of my custom made carbon fibre props. I searched high and low on the net for realistic looking square tip turbo props and there were none out there, so i asked this guy in N.Y. at Highland props what he could do for me and he is working on the first one now. The trick is calculating the amount of thrust of the prop with those big paddles for blades. The rcv should be up to the task with it's 2:1 gear reduction. 55 degree climbouts and high obstacle short field approach's are going to be sweet to watch.

http://propellers.us/index.htm

Here is the link for flexible exhaust pipes. I just have to double check on the thread measurement ( RCV vs. Saito )

http://saito-engines.info/muffler.html

Grinder.