Ford only put decent seats in 2 Cars, and those were the Contour SVT, and the Focus SVT. And that was becasue those were the only 2 cars they ever built with the race track in mind. They still see the mustang as a drag car, you dont need side bolsters to go in a straight line. It's sad that they cant break out of that mentality.
I looked at a 330 (4 door, no sport package) on my way to work today, THOSE seats are very similar to the mustang ones.