The first year of the Ford Mustangs was my first time in autocross competition. I lost to a Triumph and Cobra, and beat every time submitted by dozens of drivers that took advantage of a Miami Ford dealer's three "loaned" (free) Ford Mustangs.
I competed back then, with my 36-HP VW 1960 Karmann-Ghia!
:)
You left out the part about the Corvettes that always lost