New guy, 1964 Dart in CT

Hello out there. I have a few other Mopars, but in July 2014 I bought a 1964 Dart 4door. Great car, it had a little over 51,000 miles when I got it. Pretty sure it wasn't rolled over and 151,00 because of indicators like the pedal rubbers were not worn out even a little.

A previous owner did some maintenance to keep it roadworthy, the alternator and water pump were clearly replaced as well as some electrical stuff and sections of brake lines. Anyway, I put a little over 3000 miles on it since July and now the front brake shoes are worn down pretty thin. Of course no auto parts stores around me stock or can find the parts. Anybody have suggestions for finding these seemingly oddball front drum brake shows? It's a 225 /6 car with 9X2-1/2 front drums, 9X2 rears. I'm not interested in swapping to discs unless there is a REALLY CHEAP option out there. Thanx in advance!