Advance Adapters do a kit:
http://72.20.96.178/commerce/ccpc1093-1 ... 0-5705.htm
This mates the factory Holden TH700R-4 auto to the transfer case from the back of the G52 or W56 gearbox found on most Hiluxes and 84-89 Surfs.
I wouldn't recommend buying direct from them, shop around as others on-sell AA parts much cheaper (have seen that kit almost $100 cheaper)
Its the same kit Marks Adapters in Oz sell, but with only one agent in NZ there is no competition and the prices are excessive. I used to have an account with Marks, but they cancelled it without notification and will no longer sell direct - so I strongly recommend buying from the US and cutting them from the loop.
On the other hand, if you want to go 5-speed the Dellows (australian) kit is a very nice looking one. Castlemaine Rod Shop also do bellhousings for them (not sure if they have a complete kit).
Hope that helps - if you want to go Auto then keep in touch as its looking like there could be a bulk buy - I know of about 4 that need to be purchased at this point.
Steve