searching for radiator hose was the biggest pain for my car.
No one stocked it in the SE subs, repco, autobarn, supercheap (from Ferntree gully to Dandenong) none of those shops had any replacement.
In the end just bought a new radiator hose from Nissan Ferntree Gully. Ordered 9am morning, received 3pm same day.
But ive head from a friend, that autobarn now sell radiator hoses for $100 pair.
Flush radiator, there should be a little tap screw under the radiator and a small rubber hose. Unscrew and it should pour out.
Used Nulon 50% mix. Took ages to do and was a pain to flush the radiator.
Radiator workshops charge $30 to flush radiator (thats including coolant supplied)
Cheaper to just go with a workshop than to stuff around by your self.
Cheers
Patrick