I think Benzmac misunderstood your question. Benzmac was talking about the intake manifold, where you are talking about the air intake.
I'm sure the engineers at MB took air flow restriction into consideration when redesigning the air intake. If you are looking for more air flow, then a K&N air filter may fit your needs.
I don't know if you can easily retrofit the dual air intake from the older M119s. It may work, but I'm sure the needed parts would cost more than it is worth.
Hope this helps.