Red5,
I am using a ZDZ 80 swinging a 24 x 10 three blade. The muffler is a cut-up Bisson. Its tight in there! If I had to do it all over again I would put in a 3W75. Best motor in it's class. The ZDZ runs a little too hot due to the high compression design of the motor. BTW, I have removed over a pound of lead in the nose and she never noticed it was gone.
Ham639