and you think you'll get stopped LESS by the cops if you have a Z? I'm assuming you're a younger guy, as in less than 25...people like you in cars like the Z are prime targets for cops. If you're looking for a car that wont get you pulled over by the cops, get a sedan of some sort. And about people revving at you...you think that'll go away if you get a Z? Someone as young as you with a Z will get a lot more revving-at than if you were in a teg.
also, going with the Z will put you 29k in debt, as opposed to sticking with the teg and being 12k in debt...less than half the debt. you really aren't thinking about this rationally man, from what you've been saying, all you're looking for is to have a Z, or just to have a sports car, which isn't always the better way to go.
think about how your financial situation will be AFTER you get the Z, and it'll scare you.