The Mitsubishi Evo has been highly successful, and keeps up with much pricier cars...even bone stock, with no performance parts added. It looks like a typical 4 door economy car with some spoilers added. https://www.youtube.com/watch?v=Ees2aZcDUn8 (BBC's Top Gear: Evo on a track versus a Lamborghini)
Add a bigger turbo and these things are scary fast.
Edit: That golf below is hilarious, but wouldn't fare well on a road that wasn't straight.