Jim
As you can see below my signature age & mileage effected my seat too. I had brought mine into a auto trim shop. What they did was remove the cloth & foam. They covered the seat frame bottom with a heavy gauge vinyl just above the springs. One of the springs actually cut part of the foam cushion open. On top of the vinyl they added a thick 1 1/2 insulating material - not foam, then put the seat cushion & covering back on.
For the backrest they also added the same thick material to the front of the backrest, its glued on over the foam cushion.
Unfortunately, too much of a good thing can be bad. When I got the car back, your body sat way to high and way to forward. Even with the seat down & back all the way it was terrible to try & drive. My legs had to be bent to drive.
I did some experimenting with putting my passenger seat on the driver side for a while. It felt great as no one really rides with me, but the seat was off set from the steering column. ( 60 / 40 Bench ).
I also took my driver seat apart. I removed some of the material the trim shop installed. Took all of it out of the backrest eventually. Seat feels better, but the back aches every now & then. I've tried extra cushions between me & the seat, but there really is no cure like having a NEW seat cushion, which sadly is not available through the dealerships. And nobody makes aftermarket cushions for regular people cars.
I have a friend that works at a GM dealer and buying a new seat from a brand new car is NOT an option , some sort of liability issue with the seatbelt, side air bags and safety concerns. Even the dealer has a hard time getting a NEW seat for a theft car . New seats have to be pulled off the assembly line, or so I'm told.
Like one poster mentioned try finding one in the junkyard off a low mile car or a car newer than yours - not sure if a different year will be a direct bolt in as I'm not familiar with Fords.
I'd love to know where these guys at the car shows that have 1932 duece coupes get their seats from, they look like new ones.
Good Luck.
========= Harryface =========
1991 Pontiac Bonneville LE ~_~_~270,000 miles_~_~_