03/31/2008. Remarks by Johan Visschedijk: "As indicated by the "40th" at the wheel spats, this aircraft was flown over forty years ago, to be exact: July 9, 1966. Design of this two-seat homebuilt started in 1963 by Robert Bushby based on the single-seat Midget Mustang. The prototype Mustang was first flown on July 9, 1966. II, registered as N1117M, as it still is as of this day."
Read the type remarks on page 11556.