I guess that I can't speak for everyone, but the seats in my 95 GT are great. I was in a car accident and had a lot of back problems, yet I could always sit in me car with no discomfort. To me that is the ultimate test.
Not sure if they make a white leather though. Mine are just the cloth seats. My wife wants to put the leather seats in eventually....
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Driving: 1998 F-150
Far way in Edmonton==>
1995 Mustang GT