Has anyone used this disc brake kit??

From the description:
"A-body (Requires new lower ball joints and upper control arms to complete installation)
• 63-74 Dodge Dart
• 71-72 Dodge Demon
• 63-74 Plymouth Valiant
• 64-69 Plymouth Barracuda
• 70-76 Plymouth Duster
• 71-74 Plymouth Scamp"

I'd want to know a lot more about these kits, especially since they dont seem to know the model years well.