I discussed options for a Navara build i was planning a few years ago with Arctic Trucks , they will sell fender flares and bits and bobs for a ludicrous price if you ask but they have little interest in it , typically arctic trucks replace the axles , wheels , arches and completely rebuild/remodel things like wishbones and driveshafts . It seems laughable to me that they might use wheel spacers . I would guess the kit for sale might be bought as individual items for maybe a grand maybe 1200 but if you can afford a 150 its definitely a shortcut to the modified look worth looking at .
By the way Arctic trucks were kind enough to source a used hilux they had modified about 7 years ago , it had 90 odd thousand miles on the clock , was about 8 years old and the asking price was £18000 .