Here ya go.. Some military 336/337 ( O-2 )
http://en.wikipedia.org/wiki/Cessna_Skymaster
http://www.aircraftdealer.com/dealer...pec44779_2.jpg
http://www.airliners.net/search/phot...csearch=Cessna 336 Skymaster|Cessna 337 Super Skymaster/Pressurized Skymaster (O-2)|Reims F337 Super Skymaster/Pressurized Skymaster/Milirole&aircraftsearch=