check the post "ebay search links for Paso parts" by Paso750 at the top of the form for parts links on ebay.
you have to sift thru 10 pages of crap until you find much...but some gems come up once in a while.
fairing bolt rubbers & bolts from giovannimoto1
http://cgi.ebay.com/DUCATI-851-888-900S ... dZViewItemthere was a set of original gauges here in Australia at the Ducati club a while back.
sort out if you want to go to these or a 900SS style; I can help you locate the originals if you want them.
I just bought some spare new hoses recently from Beemerboy [USA] from this forum.
The hoses were cheap enough but cost a bomb for freight.
I don't need them all; see how you go for local supply and I can help if you're really stuck...my understanding is that the hoses are now unobtanium but some could be made up with some clever cutting.
the filler tank reservoir for the radiator is a problem component. Many split on the seams. You will find lots of posts here on how to try to repair them...be careful about buying a second hand one. I have repaired mine but think it might be easier to splice in a longer hose and run it around then to the top of the insturments as a fill point. Depends on how "original" you want to keep the bike.
the headlights are expensive; probably over $US700 if you can find one.
My local Ducati dealer offered me one as a spare for $AUD1,400.00...I passed.
My understanding is it is the same light on th FZ750 Yamaha.
most of your required parts are problem components; the effort to find them and restore the bike will be rewarded when you ride it - they're just the duck's nuts...good hunting...