Just the gear will do. 3.73s will be good for your car, but please be aware, on an auto, you will have to get a tuner to be able to change your shift points. If you don't, it will run through the gears quick, but hang for a second on the shift point and then shift really hard. The reason for hanging in the gear is because the car is ready to shift, but the computer is not. I ran into this on my 95 when it was auto and 3.73s.