Not sure if anyones seen this yet. This thing smokes the wheels on the dyno. It's clearly not a V6, as obvious by the sound. But it's still pretty badass. I still think they could have gotten a little more power out of a twin-turbo'd V8, since I've seen turbo V6's run make that much with single turbos.
http://www.madville.com/link.php?id=60290&t=15
http://www.madville.com/link.php?id=60290&t=15