If you have a Repco within reasonable distance, phone them and have your vin number handy and ask the question if they can supply them. They have the vin and rego number id in their system. Or phone Hardie Spicer.
I got mine from supercheap they have grease nipples, VN VQ VG VP VR VS all the same. Hardy spicer are 90 a pair I think I got Toyo for around 60 a pair.