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this is the pipe for 04 GT (off of their site)

this is the one for the 98 GT looks like the only diff is the front O2 sensors are on top instead of on bottom of the pipe and the 98 had a month near the X that the 04 doesn't
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96-04 will all fit just on some you cant use the rear 02's.. which you should have a tune and they should be turned off anyways so its not a big deal
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