Hy Rambos Ride, if you can turn the drum in the opposite direction to that which it was turning when it locked up it may help loosen it up. As far as parts are concerned, the brake drum p/n is 3996644 = Napa TWD2770 $234.00, brake shoes p/n 3881550, no cross at the Napa site, wheel cylinders, there were many options, need more info. these parts are for the 15" X 4" brakes, hope that helps.
