It's more than a potential mate. It's a real world fact that D's are better in some aspects of performance.

That's going to be tricky with a D. It just doesn't have the rev range or characteristics for a good exhaust note. Miltek and others will probably do a system for you, but your money may not get you what you think it will...

This is an Eisenmann exhaust on an already growly 6 Cyl 330D... Not really worth it IMO... YouTube - BMW 330d-Eisenmann-SS