Matt,
I would suggest going with something aftermarket or 01-04 Cobra seats.
I would say check into the Summit or Jegs racing seats. At $200 per seat, they are a great deal. They are simulated leather like the normal GT/Cobra rear seats and seat backs are anyway. The Jeg's are available in two-tone similar to the cobra seats, without the suede of course.
They are more than likely made by the exact same company just relabeled.
Jegs
Summit