On the track the 90-1 and 92-3 tegs will be the same speed, or at least a non-measuable ammount of difference. The only real difference between the 90-1 and 92-3 is the bumper style, and the fact that 92-3 tegs are OBD-1, which means the wiring is better, and easier to configure. Other than that, its pretty much the same car