The CL65 AMG, arriving fall '07, receives the 6.0L biturbo V12 thrust carnival found in it's S-Class AMG cousin. This is a perfectly good thing, as the powerplant is good for 612 horses and a tire ...

except for the 2007 S65 AMG that uses the older twin-turbo V12. Seeing as the CL coupe's a range-topper, MB may go with the TT V12 for the overkill effect, but we doubt many would be complaining ...