71 Dart Front Disc Conversion Questions

That sale did not work out, so I am thinking that I will got with the single piston 73 later. I will convert to the large bolt pattern, my question is what all do I need to make this happen. I understand that I would have to have a set of control arms off an E body with the large ball joints? plus the spindles and calipers? Master cylinder and proportioning valve ? Oh and after reading the infamous Willwood VS factory debate from 2015 I would rather use the factory stuff as my budget is a bit limited.

Thank you in advance