you could join up some of the d40 pages on facebook. theres a few of them and these sorts of thing show up a fair bit or put up a wanted to buy post and usually someone will have a set laying around. quite a few of them put trays on their utes and sell the tubs and tail lights. worth a try. theres Aussie 4wd Navara D40, Australian D40 Navara, Navara 4x4 sale page. im sure a few of the members were from up your way