Brian Karli spotted this picture in a recent Sport Aerobatics magazine and wondered if anyone knows the whereabouts of the aircraft now. It is E3B-146 and has an O-360 engine.
Both Jesus Ballester and a reader in Norway wrote to point out that this is probably not a CASA aircraft, but a Czech C-104 serial number 146.
From the Erwin Konig book : Czech Air Force, then Czech Aero Club as OK-AQJ (later OK-AOZ?), then Swiss reg HB-USZ. From July 1960 German reg D-ELFY, and from Oct 1967, US reg N102M. From the FAA registry the current registration is N131FD which is located in Texas. - Thank you!