I have 26 inch tires on my 88GT......I dont think you could fit 28's without modifying the fender well.
If I were you I would definialely get the H-pipe welded in with the horse power you are pushing equalizing the pressure in your 2.5 inch pipes would net you some HP. For 25 $ how can you go wrong?
Good Luck,
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92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim.
00' Lightning-Stock
88'CRX-13 second ego killer
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