"To produce a photo that Vargas could use as a guide, Robinson set up a shoot at a Ferrari dealership in Beverly Hills and asked the Elektra art department to hire a blonde with "a nice figure." The model's name is Candy Moore (purely a coincidence, says Robinson)."
I found a site that had F's from the 70's... from there I could eliminate any that didnt have the "hoop" shaped bumper or the spoke style wheels. '76 had some similarities but with the pronounced lines on the hood, I just had to go with the 72.
In short: I cheated. I could have the wrong year of course!