Its a DANGEROUS thing searching Ebay for normal things like clutch covers.
I spotted this Spaghetti system on Ebay.de recently - I'd been watching a thread on another good Duke website (
http://www.ducati.ms) where owners were clubbing together to bulk buy systems from a manufacturer.
The header system on my 900ss always looked bad even when I first bought it - then, when I found out about the deflector plate in the diamond section, I decided that one day I would have a full bore spaghetti system (but my credit card has just melted)
The seller is the distributor for Sil-motor parts in Germany so seems reputable - they appear to have one more system left (at least).
Sil-Motor system on Ebay 
Financially insolvant Frank