I won the item on ebay for $20.00 including shipping. (I received it today, a genuine stampled Benz part). So, I thought what the heck, it's worth the risk. A dealer informally told me that he thought it would be a direct bolt on job -- but, what would he know, he was not a tech. just a salesman.
I hope that this will work.

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Marc
C55: Evosport headers & UDP's; AMS crank; TVT thermo; phenolic spacers; Denso IK16's; EuroTech ECU; RennTech cf airbox w/ Green filters; Z06 catch can; Sprintbooster; Optima RedTop; Quaife LSD; AMG: shift paddles, 030 rear calipers & rotors; Rotera brake lines; Euroteck CF lip; "C63" rear diffuser; 18" SLK AMG Turbines (summer); 18" OZ Superleggera's (winter); K40 dual f&r radar w/ laser jammers; MB: digital climate control, iPod kit & mp3 CD changer; iTronic B/T for MOST.