Sources for brake calipers

Duster story:
My buddies "twister" duster had poorly maintained 4 wheel drums and that was an exciting car to panic stop. He bought the whole thing for $50 from his girlfriend's uncle. The heater was flopping on the floor and burned my leg on the way to Megadeth. Great times. I don't think he ever titled or insured it. Actually I don't think he paid the guy the $50 either.