A second option I had thought of is checking if a supercharger system from a C230k using the early M62 Eaton could be adapted to a E320 I6.
I have heard that there are similarities in the two motors configurations.

My thought was if Benz made both the 4 and 6 cylinder blocks alike as far a bracket bolt pattern, and possibly crank balancer. THis might be possible? I have a complete C230k engine not in use,in my garage.

Has anyone done any checking into this possibility?

NOTE: My first option is in the post about a rear mount turbo size.