Basically, watched this movie in the early 1980s. What I remember is that there is a group of Coeds running around this town. The coeds are dressed in 1960s or 70s clothing. Sweaters and knee length skirts. A creepy house at the edge of town has a nut inside and captures the coeds, cuts their faces off, and puts them on a plaster mold to see if they will fit the face of his sister. The plaster mold is on a piece of wood that looks like the back of a hand-held mirror.
The film is black and white. I likely saw it on early HBO or Showtime.
It is not Eyes Without a Face, The Awful Dr. Orlof, or The Mill of the Stone Women.