Yeah, the 500E has a shorter manifold and no turbos though..
I plan on building up a 500E with twin turbos however. The engine is good for 1200HP.
Mercedes are great vehicles. I have 4 of them myself. The diesels last forever too. You should have your dad check out
www.mercedesshop.com if he has not already. I'm a mod on that site. It's packed with great info on Mercs.
I know, Right!
It's all aluminum too! Actually weighs less than the original I6 engine the car was designed for. Unfortunately a set of ignition wires costs over $600
It takes 11 quarts of oil too!
Here's what it sounds like...
http://media.putfile.com/Mercedes-500E-Engine-REV