HELP! 11.75" Disc Conversion - Bearings, Seals Etc

BTW that was a good deal for the upper control arms and spindles!

I note that the big retaining washers and the nut cage (for lack of a better name) are not pictured... hope they are included but if not shouldn't be too hard to find.
Thank you so much for your pictures and information. It helps me tremendously (and I also hope that it will help others). I'm pretty much a Mopar virgin and this is my first Mopar classic, so the learning curve is steep and long for me and I can use all the help I can get! For example, your comment about the missing parts. The seller gave me a list of parts I need to buy to complete the conversion, but I am not sure if it is comprehensive. He didn't know anything about adding the 11.75" rotors, so that's why I've been searching out that info, so I can go all the way and get the bigger brakes as long as I'm buying all new parts anyway. So once again, I appreciate your help, and link to the caliper brackets!

The Dr. Diff components say that they are slider type brackets, and I presume that's better than pin type, and I should go with the slider type brackets. That means that I'll need to make sure I buy slider type calipers (or are all calipers the same)? Are the calipers for the 11" rotors the exact same ones for the 11.75" calipers? I presume so but am not sure.

When ordering my parts, I need to give a particular car...so it's 74 Dart for my upper control arm bushings and ball joints, but 78 Cordoba for everything else?

Happy Thanksgiving, everybody!