As title, needs to be the high pressure race tank for in front of the headstock (when sitting on bike). Maybe also known as RS header tank. Would consider the "proper" aluminium race unit if anybody has that as well.
Tom I who is a forum member has connections with a few people that deal in these things and may even have one himself, you could try sending him a PM or try Target Motor Sport as they also have good connections for RS type parts. Tom I is also on facebook under The Fuel Shop. FUEL Race Parts @FUELRaceParts Ducati race bike parts store, run by Tom Irvine, proper Ducati SBK fan, and lover of all things carbon-fibre and magnesium
I dont do twitter. But it was great to see Tom's page and what he is up to. What a great little hobby he has. I need to find one like that.
Tom lives in Sweden now but comes over regularly as I understand it. I have bought a few parts from him in the past and his workshop is like an Aladdins cave of exotic parts, ex Frankie Chili FO1\2 frame as I remember , 40 mm early monobloc race calipers etc. etc. He has many ex WSB parts for the 9** series bikes which he often sells at decent prices. If you ever need something like that he is always worth contacting. He has some beautiful bikes as well.
