I have mentioned before that I thought a Rotrex Supercharger might be the way to go to make some serious power in the Base and Limited Crossfires. Here is a guy who actually did it. He ended up with about 323 HP at the wheels and over 400 at the flywheel. He did this for about two grand on a Mercedes E class straight 6 cylinder engine. The same could be done with the V6.

http://www.mercedesshop.com/shopforu...d.php?t=169695