Just a thought ...

TFC's P-36 and POF's AT-12 at Planes of Fame's 2015 airshow.

Curtiss P-36 with the first Experimental Curtiss-Electric Four-bladed Controllable-Pitch Propeller (1939)

Curtiss P-36 with the first Experimental Curtiss-Electric Four-bladed Controllable-Pitch Propeller (1939)
Fully loaded Republic AT-12 Guardsman
Fully loaded Republic AT-12 Guardsman