I own a 1993 LX 5.0 automatic tranny w/ exhaust and headers and i want a gear put in it but i dont know which one to get. Ive heard lots of good things about the 4.10 and 3.73 gears. I drive my car about 2-4 times a week. I dont want a gear that will kill my gas mileage but i want a gear that i can go to the track with and it will run fast. Please give me some input on what kind of gear is good for me.