Read post #2 first, but suspicious since coming from a guy w/ just that single post.
If drum brakes, there isn't much Mopar about it. Looks like standard Bendix design you see in most U.S. cars. I would think any competent brake shop could work on it or get parts. The drums are the more uniquely Mopar part (bolt pattern, etc.).
As mentioned, the K-H calipers are widely available. You just have to eat the core charge if you don't have used ones, but shipping them back is almost as much. 1973+ disk parts are easy and can buy a whole new setup w/ spindles on ebay. Can get new power booster w/ MC for $140 on ebay.
