Originally Posted by respdoc
I would have to say the most user friendly way would be to find a totaled car (body wise) of a SRT-6, C32 or SLK32, remove the complete engine with ECU + wiring if possible...rework it (heads, cams, etc.) then drop that into the engine bay. For the most part everything should be a plug and play setup.
Only real trouble would be finding such a wrecked car but when I've seen complete E55, SL55 engines on eBay...some S/C 3.2 liter motors should also be floating out there somewhere.
If only someone can get the engine code and price of one of the SRT-6 engines.