Hi, you can also try Murray Park who has always treated me right,
Murray B. Park - Used and NOS Parts for Chrysler, Imperial, Dodge, Desoto, and Plymouth and there's also Wildcat Auto Wrecking, Oregon,
https://www.wildcatmopars.com/, also a source that has helped me a lot. I have a '64 Imperial for which NO drums are re-popped. Murray came through for front ones some time back. Kanter re-pops MOPAR drums and I have them on my '57 300C. I don't see them listed for the '64 Chrysler but you might call them, 1-800-526-1096. I also have their brake shoes on the C, and so far all's well. If I ever need rear drums for the Imp my first call will be to Murray. JC Auto Restoration in Washington State,
Home - JC Auto Restoration, Inc. has an
enormous amount of MOPAR parts and is very nice to deal with. These three sources have been invaluable with my restorations and maintenance. Good luck!
BTW, if you're dealing with the left wheel do yourself a favor and change to RH studs when you pop the hub. While LH lug nuts are not hard to source, the LH studs are unavailable. I converted the 300C to LH studs. (I finally did find one source for the LH studs but @ $8/per I wasn't about to go that route!)
Hope all works out! Keep us posted!
bob