Hi Schwen,
They are located in Paraparaumu, apparently about an hours drive north of Wellington. I'm in Auckland, very rarely end up in Wellington but if I do I will try to assist if parts are still available.
Let me know if you want the ph# of the owner and I will PM it.
dieselgman,
Thanks for identifying it, I'll update the title. See how Schwen goes, or I can try to work something out with the owner for you. Tools and removal will probably be the main issue for them.