I drove both styles and currently own a 2004 gt. The major difference is the look of the car. Some like the 97-03 style while others like the 04+ gp's. I think the 04+ is much much nicer with regards to the interior. The engine in the newer models have a "drive by wire" throttle body instead of having cables and the intake is a little different. The air box seems to be improved as well. good luck
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