2006 Seats in a 71 Mach 1
Here are the photos. Very comfortable!
Each of the original seats is mounted on one permanent threaded post. These posts are used to secure the new seats. Holes will have to be drilled in the floor and back plates used under the car. I used galvanized steel plates from the electrical section of the local hardware store. I then used nuts with nylon inserts to prevent them backing out.