Mine is a daily driver, too. For me, I did not do gears and the tune because it is a daily driver. I did not want to take on buying super unleaded, lower gas mileage, and the sound of higher revs when on the highway. It just comes down to what you want for your particular car. You can see what I did in my signature, as these are all daily-driver friendly performance mods ... but they won't get you what 4.1's with an aggressive Diablo tune will, either. I know my car does not do in the 1/4 what most others' cars here in this forum will, but ... at the end of the day ... my car is still very fast.