That's a C43/E55 AMG air box and probably the best flowing set ups AMG ever created. If those things weren't so pricey I'd be offering them for the Crossfires over the other MB conversion.

Congrats on the project. Did you switch to a clutch fan or were you able to keep the electric one?

The engine bays in these cars are extremely similar to the W202 (hint to anyone looking for parts to work on a swap) so I know how tight of a fit that thing is.