I have a Satio 91 on my Showtime 50. This engine is wider than the 82 and the stock engine mount proved to be too flexible for the larger/wider engine, so I used a Dave Brown FS 90 engine mount instead. I am using an APC 14x7 prop which turns a rich 9300-9500 RPM on 15% Omega. At 5000 ft. altitude this engine has good power for conventional aerobatics but it is not over powered.

Frank