Date registered: Feb 2008
Vehicle: 2004 W220 (S430) ; 2001 R129 (SL500) Sport
Location: Alabama Gulf Coast--formerly Charlottesville, VA
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I believe you could get a W220 S600 4matic, which was close to 400 horsepower. I'm saying that as what I think, not what I know, so you need to confirm it. I don't know whether any of the supercharged or turbocharged cars that pump out upwards of 500 horsepower are available as 4matic or not. I don't think they were.
Hope that helps.
"Don't pick a fight with an old man. If he is too old to fight, he'll just kill you."--John Steinbeck