Aftermarket brakes for a 70 Dart?

When SSBC v1.0 went belly up, they screwed over customers, vendors and employees. Almost everyone who was owed got nothing. Previous customers had nowhere to get proprietary parts like rotors. I just drove by their buildings on Saturday. They're still empty, but have a nice "Available" sign out front. I'm happy for those who've had a satisfactory SSBC experience.

SSBC v2.0 bought what they did for pennies on the dollar, and are making some things, for now. They don't sleeve stock calipers, which is the origin of their name.

When there are kits available based on stock parts like those sold by Dr. Diff, and real brake companies like Wilwood I can't understand why someone would buy something else.