Tell me if I got this right. Keep the A-Body spindles for the Dart. Remove the slider caliper adapters, calipers, dust shields and rotors and replace them with the Adapters, calipers, dust shields and the rotors from the '73 wagon?
So the spindles will be correct for the A-body adding the bigger brakes (pin type) from the wagon. A little more work but sounds good. The bearings and hubs same? This is to keep the shorter spindle on the Dart and the 3/8 taller one for the Satellite?
ricky