Mark, after car number HAN9-77592, GAN4-66226, (Dec. '68) the parking lamps are lower than previous cars. Other than that, and the side marker lamp, any fender up through '74 will fit. The rubber bumper cars didn't come until 1975. If you want a good match, stick with '68 or older, or change them both. I don't know if the later fenders have the bracket for the bonnet prop, though.
Jeff