8 3/4 wheel adapter flange.

I'm not a fan of those regardless of their age. They're being used to go from 5x4" to 5x4.5" I assume?

These would be a better option
Dodge Dart Plymouth Barracuda Duster Valiant 5x4 to 5x4.5 Wheel Adapters 1 Inch | eBay

Or spend the money for new BBP axles and brakes