Get a V8. Don't **** it up. Be good to your parents, pay them back (FYI, you can't get credit to finance a car at 17 years old) and don't get in trouble with the law. Don't lose sight of bigger/better goals trying to pay for a car. Life is short and cars come and they go. There will always be another car.
If you end up buying one, did I mention to have fun? -and be nice.