haha tai kor advan, you think thats crazy?? What do you think of this then, the most amazing transplant Ive seen is the BMW V12 from a 850i or the 750i into a E30 3-series bmw.. haha now thats insane, that 3 series is almost half the size of the S-class..
But then, seeing a V12 in an ordinary car = sleeping monster.
I duno about changing the sparkplugs lar, but the bmw v12 has 2 ecu's, thats more headache than changing sparkplugs if ecu go haywire.. maybe the benz v12 has 2 ecu's too?