hey this isnt something i would do but something i have been pondering the difficulty of. how hard do you guys think it would be to put the mercedes 430 engine in our car? even the 500. i only ask because every model of benz that comes with the 320, besides the slk, offers these engines, the 500 obviously having replaced the 430 a few years back. i wonder if any benz people have done this. i would imagine it would be cheaper than one of the 10k upgrades, but im not sure of that.