Keep checking UK ebay, as they come up from time to time.
example, here's one for 10 quid.
http://cgi.ebay.co.uk/Pinto-Distributor-/260737203462?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3cb525fd06
Sometimes you have to bribe the poms so they will post stuff. But above all else, dont get them to go to the trouble, find out postage costs, then back out as this is what has stuffed buying from the UK as many sellers will post to europe but not oz... go figure.
Otherwise, put a wanted ad on one of the english sites like TS, there are plenty over there.
They only came out here on old auspost transit vans, you migh get lucky at a transit wreckers, (always pop the bonnet on transit vans at the wreckers :))
I'll have a dig in the shed, used to have 4 or 5 lying around.
Shaun