You have way more power that is untapped. You've barely spent several hundred in mods, that really arent helping a large amount, until you step up to stage 3. With anything, if you mod it and drive it hard its going to break, no fighting against that, and the idea that you'd like to mod something new with a warranty and risk having it voided because of the mods you've done (all dealerships arent stuipd) you run a big risk of having that warranty voided. In that case you're going to have an even worse time finding replacement parts for a brand new car, as well as paying the kind of prices that go along with it. Keep the Z.....period!