I think the cars should be left alone. I'm not knocking any owners who chose to do so, but i for the most part will not. Wheels, maybe. Signal sequencers, maybe, but that's it. I think the car is worth more the way it is. Pristine condition, always shining, clean, mechanically sound, that's my thing. Serious modifications? Not a chance. A neighbor of mine did some serious modifications to his GT convertible. He lost his job, tried to sell the car, tried to trade it for something cheaper, no chance. Dealers told him to put it back the way it was then maybe they would talk. The bank eventually came and got it. He is now back on his feet, pretty quickly i might add, bought another new GT convertible and is leaving this one pretty much stock with the exception of some very minor modifications. I'm now after a 2011 myself and i have no plans to touch it. My 2005 has only 9k on it. I'm gonna keep it.