Brakes overheated-must I replace calipers

As usual on a lot of subjects, Dave has it right. The cause was that: The only problem with bakelite is that it is hygroscopic, and expands when it absorbs moister. Couple that with the fact that people were not changing their brake fluid which is also hydroscopic and you have the perfect combination for a real disaster. Of course, all of this has nothing to do with the OP'ers posted question. The real answer to the question is how lucky do you feel and how much confidence do you have in a old mechanics crystal ball. Was it the caliper pins sticking? or the hoses collapsing? or the caliper pistons? In my world as a master mechanic I always recommended to my customers that when it came to brakes it was better to error on the side of caution than it was cost. Now your mileage could and probably does vary from mine, but keep in mind we are not talking about something minor we are talking about a real true safety issue. With that being said either replace them or rebuild them, and while you are at it replace the hoses also.