The car is plenty fast, if you do cosmetic mods, you will get to enjoy them everyday by just looking at the car. Performance mods, you can't punch it everytime, it can lead to tickets or jail time if you do something insane on public roads. If you are not really tracking the car, I don't see the point in doing performance mods, as you can't fully utilize the extra power on public roads. As a matter of fact, you can't fully utilize the power of the stock car on public roads!