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

The upper ball joints will be “small” and the bolt pattern is 4”.
I believe everything but the pitman (steering box) and idler arm will be the same as US Darts.
You’ve got me on the brakes. I would try to fit standard A-body stuff and see if it fits the spindles you have. If it doesn’t fit, I reckon US A-body spindles should fit because the ball joints are the same.