Better not say "All" The kits that come with new spindles would be the larger taper upper ball joint.
You may still need the Dr.Diff adapters.
I have been out of the game for over 10 years now.I's nice to see SSBC is still in business. I have used their 4 wheel disc kits on B and E bodies before.And yes the brake calipers and pads are the same as 67 Mustang. Their rear disc brake kits use 1993 Thunderbird calipers and pads. Now that is for the iron calipers. I don't know about their fancy aluminum kits.