Hey Penny! Was that interview in a magazine that had a fabulous cover painting with Barnabas Collins baring fangs back to back with Peter Cushing in Van Helsing mode? That was a great interview from the early 70s and I remember being fascinated when I read it that Frid longed to work with Jeanne Moreau.
I'm quite sure that Frid never did the movie and, if it was made, presumably it was under a different title with a cast that didn't include him. I believe it was around '74 that Frid went to live in Mexico for a few years.
cheers, Steve