84 at the Reno Nats, we got a chance to look over and peek into a prototype pusher
Lear Fan?
I would not want a P39 type drive shaft passing between my legs
Ah yes, the low hanging fruit. I would be concerned with gearbox maintaince.
All the fast prop airplanes have been tractor. Wing down wash and non laminar air does not give great propeller efficiency. The Seawind configuration looks interesting though.