Would need some input on gears please. Just wondering witch one to put in my GT. 4.10 or 3.73. My mustang is my everyday car, use it to work and lots of highways. I'm leaning for the 4.10 with SCT programmer, seam to be the most popular upgrade. But was wondering if it's to big for the kind of use i do with my car. Peoples are telling me that there is no big difference in performance between the two. Will it affect alot my millage, rpm, and would probably loose the use of my first gear i guest.
Some gostang people must have those gears in there cars. What do you thing.