The 63s (6.3 liter V8) are replacing the old 55s (5.5 liter V8) right? i wonder what that means for the 65s (6.0 liter V12) i guess thats where the 7.3 liter comes in. *crosses fingers for SL73 and S73*
The SL73 already debuted and went away, though less than 100 were made - the present SL65 produces considerably more horsepower, thanks to forced induction. The figures are 605 versus 525, if I recall correctly.