Awhile back I read a comment from one of the Brabus tuner people. Someone asked if they could put a V12 supercharged Brabus engine in a W126. His reply, "With enough time and money, ANYTHING is possible". That said, the moment you begin to change the stock components (especially engines) the value of the car can take a nose dive.

This is why numbers matching (engine and chassis) in the world of vintage cars has a high value to car collectors......