[surfbeast]

Stock T/B's are 65mm for all 94-04 GT's. The problem that I have with the data is that everyone is geting excited about the Accufab unit because it gives an extra 1 Hp gain. It costs 100 bucks more! It is real nice looking but for a hundred bucks I'll pass. I got the Dragon plenum and 70mm T/B for under a hundred bucks off e-bay. Polished them both and they look and work great. If I had a newer model I would get the 75mm T/B and the cheaper of the bunch of upper plenums. Port the upper a bit and be within 1-3 Hp max of the overpriced Accufab unit. 1-5 HP is not going to win or loose a race, or improve your track time.