Scored an AMG engine plaque from cruzinquick's boy hooley when he was trying to retorfit a S/C to a C55. Since he already had a plaque on his C55 and there was one on the S/C as well I figure I would inquire about the plaque he might not need.
They're kind of a hard part to find since you either need a standalone AMG S/C or find a wrecked AMG (like moparbust). It really is too bad that our engines didn't come with these from the factory when it was well known that the engine was sourced from AMG because the engine looks "complete" with it on.