with the backrow of seats in Kluger, Mazda Cx9 and Territory none have anchor points, so legally all you are allowed in that back seat is a foam booster only with no anchor point or tether, and no H harness is allowed to be used either, only the normal seatbelt.

The only car we have found that has anchor points in back row is the Kia Carnival. Which Im not sure how will go on your dirt roads?
Just wanted to point out that my territory DOES have anchor points in the back row It came that way, we didnt have them put in.
I agree with the space in the back of the territory with the back seats up, there isnt alot which sucks. I hired a kia carnival once on a holiday (I know alot of people dont like them) but I actually really liked it, it was comfortable to drive & comfortable as a passenger. There was HEAPS of room in the back behond the back row of seats, I could fit the P&T pram in plus heaps more at the same time.
Anyway, just wanted to add that