71 Duster Bench Seats
Try Holloway's on Ross Ave in Dallas. (Holloway's Upholstery Incorporated. 4221 Ross Ave, Dallas, TX 75204 (214) 823-5888) They did a great job on the rear bench for the Demon. He's a restorer, too.
I have a 73 sedan with the deluxe front seat I'm going to have him do. I want to have the front seat a bit stiffer than I recall the stock one being. It goes in tomorrow. I can let you know how it goes.