Throwing this out as a trade feeler. I have an excellent condition OEM Performance Diffuser in matte black that I would like to trade toward an OEM Carbon Fiber Performance diffuser + cash on my part. This is the single outlet version (I have a 330i). I'm not interested in selling outright just yet. I'll provide exact pics if I get an interested party. FYI, I am located in Cincinnati, OH 45243. Shipping is not a problem, though I would need your diffuser first.
Here's an example of what I'm selling (but all in matte black):
And here's what I'm looking for: