Never heard of the a/c : always always something to learn isn't there! - the engine comment brought to mind this from Herschel Smith's excellent "Aircraft Piston Engines"...
"...Curtiss-Wright had gone to about the limit for a nine with the G series R-1820 Cyclone.....though at some cost to the smoothness. DC3 buyers had the choice of Cyclone or Twin Wasp power, and it was said that pilots from American Airlines, which used the R-1820, could be identified by their tremor, which took several hours to go away after a long flight with a pair of Cyclones. A gross libel, undoubtedly."