Ok, so lets say that I have 6 to12 thousand to spend on a used car. I'm looking for something sporty with some power. Mustangs are too common. I want something I can add on to and make it one of a kind on the road. What could I get that would be reliable, affordable, and customizable? I currently have an '06 Chrysler Sebring Touring. I don't want to downgrade.