not yet
you might already be in this club
http://www.crayfordconvertibleclub.com/
the Corsair assembly plants
Halewood, England (1964-1969)
Dagenham, England (1969-1970)
and crayford was a coach builder/automotive division . Crayford Auto Developments, Ltd and Westerham, Kent, England
maybe researching company achives may pop up the super badgeing question
so fully Imported to australia
if chrome badges on the panels are super not GT etc ... no information on that found
super trim name was also an australian automotive trimming company started in 1960
http://supertrimcoburg.com.au/about-us/
66 to 89 is a long time to track a car history if it had many owners
if the trim is a Super trim design then Victoria is a great start
ford car clubs of the times or vehicle magazines may show a hit
but you could try a search the registration plates if you knew what they were in australia at the time
http://www.mvdb.com.au/search.htm