Seat upgrade ... attempt #2 ...
Reply #13 –
Categorizing the Mustang seats is a bit of a strange beast in and of itself. When talking about the GT sport seats, from my research (and I could be wrong as I'm sure there are differences between GT's, LX's and even convertibles) ... but basically:
-87-89 used the 26" "high" seat back fully articulated seat with adjustable knee bolster and the large headrest
-90-91 used the same seat, except with a 24" "low" seat back and small headrests
-92-93 went back to the 26" "high" seat back, but kept the smaller headrest, and the adjustable knee bolster went away and was just integrated into the lower part of the seat foam as a single piece.
As far as I can tell, the XR-7 and Turbo Coupe seats have the 24" "low" seat back with the large headrest and the adjustable knee bolster.
Now, as far as the foam itself is concerned, I would say the foam between the Mustang and the Cougar/Tbird is the same overall size/dimension, but I would also venture to say that you are correct in that they do not have the same density or cushy-ness. Below are shots of the actual seat bottom foam. The Mustang GT one is marked with an "M" from the factory and the Thunderbird Turbo Coupe with a "T". If they were truly the same, I doubt they would be marked in such a way.
It's interesting that the Mustang (most years anyway) used a taller seat back when they probably could have simplified production and put the 24" on both production lines.
Density of the foam would be a good description of what I experienced between the two. I never found the Mustang seats very comfortable. I felt like I sat on top of the Mustang seat and sat in the XR-7 seat. At the time I probably weighed 150lbs. dripping wet though.
Thanks for the thread. It's going to be (already is) very informative.