John Downing wrote:

Greg, check with Jim at jim@whirlwindpropellers.com   his props like nice and he has on one his Wittman Tailwind which is really impressive, performance wise.  I believe they are about have the price of the MT, prop, governor and all. 

Or just look at the offerings at the website:

http://www.whirlwindaviation.com/

Dale R.