The short list of places I goto for parts and support
The longer list.
Repco
Supercheap
Bursons
CBC bearing
Melbourne drive shafts
Anglomoil (spelt that one wrong I'll fix it later)
Reflex Engineering
The Rover close enough you can get to it and back without loosing too much sleep but far enough away the owner wont know you.
Documents... AS I get em sorted, heres the start point for the links . These are all sourced from various freely accessible sites, I dont own them, But I did break em down so you dont have to wait for a 300mb pdf to clag out your phone/tablets resources
Series Workshop Manuals - SIII sectioned and complete manuals