Aftermarket brakes for a 70 Dart?
Manual in all. First, KH hubs and calipers are getting harder to come by. They work real well when they do. Wilwood (Conversion kit $$$) to me stop about the same. Some may argue that. The stock 73-74 (More years and models if you look into it.) Easy to maintain and get parts for. I thought they stopped just as good. I put a 100k on them and only had to change pads when needed. Never needed a caliper or a rotor (Not even turned). As said JMO. There are other kits out there but I never had them.