Large ball joints, small ball joints, & Aussie spindles & brakes

Australian assembled Valiants use small upper ball joints (same as US), unique low ball joints, unique pitman and idler due to having the steering box mounted on the chassis rail and tie rod ends that are the same as US A bodies. I've never been able to work out if the wheel are the same as a US Mopar, I'm fairly sure they are smaller than the 73 on disc brake models but not sure about 72 and earlier disc brake cars. The Aussie A-bodies of this model also used a thicker disc rotor than their US counterparts.
Thank you so much!

I’m going to measure the bolt circle, and the rotor diameter, tomorrow. If the bolt circle is indeed 4" I'm pretty sure I won't be looking into this any further (swapping US parts onto the car), as I've already spent way too much time, and money, on this car.

And it's not even mine!

If the brake parts have to come from Oz or NZ, so be it.