Uhm, I would just like to say that, the car you are looking at is a stock vette, with some sport/racing springs which lowered it around 1.75 inches, and an aftermarket muffler. Those are the premium rims that are an available option on the 2002 'vette, and unless I'm mistaken, that is a 2002 'vette.
Edit - After a second quick look, I noticed that the stock rotors have been replaced, so it is possible that (s)he, the owner of the vehicle, did some actual work on it... with the suspension anyway.