Believe we all are in a small unique club here as I feel the same as you all haha. Have not seen that pic before, however striving in my ever slow progress in my wide bodied 5-Speed work, I was looking for a cool aero design mirror as I did not like the normal 928 box type, just plain ugly in my books (sorry). Jacquemond in France offer several unique designs but I do not like them that well either. Am swingng towards the GTS Style Mirror kit as easily available, a great design and functionality. Porsche's 996 Carrera 2 by Jacquemond is farely close (See pic).
I do remember seeing this style somewhere, but believe a general aftermarket body kit accessory through one of the many aftermarket parts catalogs out there, will keep looking though.
Jacquemond 928 Aero Mirror Design Awhile back
Custom 996 Speed Art U.K.
Jacquemond 928 Aero Mirror Design Closeup....
Jacquemond 928 Wide Aero Mirror GTS Style, this style widely available...
Carl; 928 Motorsports Offers GTS Style Mirror kits
http://www.928motorsports.com/parts/images/aero_mirror/AeroMirrorKit2.jpg
