Making 73 B body brakes work in A body & resto questions? suspension??? as well

I picked up a free 72 dart the other day for the A body 8 3/4 rear end that was in it. As a bonus it came with a set of 73 B body disc brakes in a box in the trunk. Jim Lusk has informed me that I can use these if I find some A body disc brake upper control arms and a set of B body disc brake spindles. Do I need anything else for this transition and besides ebay, where is the best place to try and find these parts.

Also, how can I identify the parts from other upper control arms as I have a set of upper control arms here from either a E or B body?

When you guys restore your older disc brake set ups, where do you start/begin? any tech articles on this. The ones I have look decent but have a light coating of rust on them from years of service. Looking for any advise on how to restore them, what to use and which paints to use.

Also, I scored a couple of sway bars, how can I identify these and see if one of them will work on this dart and what suspension rebuild kits do you like. This will be a 340-6 car andI want it to handle decently, unlike my 70 cuda vert BB car.

This is going into my 67 dart 2 dr post project pictured below.

thanks

LAWFISH