re: "...as installed on the C230 is a match for the mounts on the G?"
I think that the mounts would be the very least of your difficulties, not to mention mounting the engine to the transmission.
I think that the biggest headache for you would be all the electronic controls, sensors, microprocessors, etc. that must accompany the Kompressor engines to keep them running and NOT blowing themselves up. There are probably changes in the fuel system as well (tank pumps, etc.) that are also required.
I think that it would take a master technician with a thorough knowledge of the current Kompressor engine, plus a lot of money, to install this.