I was doing some reading and learned something. Maybe it's only news for me but here goes.
Name 4 major components that are different on a Beaumont (and likely lots of other cars) that are different if a car was ordered from the factory with metallic brakes.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars