Originally Posted by c32AMG-DTM

It's been posted by knowledgeable sources on MBWorld that the stock C32 TB is 74mm. Are you guys 100% that the stock SRT-6 TB is only 68mm? I would've thought they'd be the same.

Incidentally, the stock E55K TB is 74mm - they've seen nice gains jumping to an 80mm AMG TB out of an SL55 for years; now there's a new 82mm TB being discussed over on MBWorld, although IIRC it's still in the testing phase.