hubs for trailer to suit 120s prado (17")

All I can help with is that I have rims for an early Prado VZJ95 and they fit on my 80 series no worries. They also fit the new 120 series Prados as well. I have them for my new 120 and by the way I need 3 extra rims if anybody knows where to source them from please.
This tells me that landcruiser hubs will do the trick.

Standard 6 stud landcruiser hubs are fine for almost any 6 stud wheels. I used to think that the centre lip on the hubs that fit the wheel centre had to be right for load carrying reasons, but the hubs you buy are flat. I have farm machinery that I've modified to landcruiser hubs so that I can run bigger wider wheels and never had a problem with the rims just relying on the studs. I think the later L/C wheels are 5 studders, so make sure you buy the correct ones. Also for most trailers there are two types of bearings, they used to be called holden or ford. The outside diameter is the same I think but the inside is different to fit on a slightly larger diameter axle. Therefore the landcruiser bearings would be the bigger centre ones (ford I think). I hope this is not too confusing. Rus.

Holden bearings are called Type A or Set 2, Set6 fit 39mm round axle and 40mm square axle.
Ford bearings are called Type B or Set12, or Set13 fit 45mm Square axle.
Both fit into standard hubs, 4 - 5 or 6 studs depends on axle size to what bearings are needed.
Just to confuse some boat trailers and caravans take Holden inner and Ford outer on the smaller axles
Cheers
Charlie