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

The upper ball joints will be “small” and the bolt pattern is 4”.
Thank you! And because Bazza loves the wheels so much, I was afraid of that (4" bolt spacing).

I believe everything but the pitman (steering box) and idler arm will be the same as US Darts.
I'm not an expert by any means, but based on the time I spent working on this car, and looking at US-Dart steering parts, I would agree.

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.
I've been considering digging into bearing numbers (inners and outers), and seals, for both US and Aussie cars, and if they are the same- who knows? Maybe I'll get lucky!

Then again, karma has been somewhat of a ***** to me lately, so I have my doubts.

Thank you for the response!