I am thinking of getting a new set of gears as one of the first mods for my Cobra, and was thinking of going with either the 3.73s, 3.90s, or 4.10s and was wondering if you all had any opinions on the matter. I really only do highway driving when I am traveling, so that is not a big problem, though the car is used as a daily driver. I am really only concerned with whether there are any drivability issues.