Rusty, Danny; thanks guys.
Ok, so I need another lead, that makes sense. I'll have a rummage through the car and see what I can find. Failing that I assume my friendly Nissan dealer would stock them - I want a new cambelt anyway. Er, and a water pipe banjo-bolt for the turbo, and probably some other stuff I've forgotten.
Oh yes, and I also need to find a turbo oil-feed hose, assuming I get a braided line made up, can anyone tell me the thread sizes I'd need?
Right, I think that's everything for now!
Cheers, Jamie