General comment not aimed at anyone.
Catalogs and online parts suppliers, various computer "systems" and counter persons do not have correct info sometimes. Especially on old trucks and the differences between 1/2T and 3/4T if there is any difference. Many times parts are the same. Part numbers don't mean anything sometimes. I have seen this many times. You can not trust a computer "does not fit" message on this particular part. GM tries to use same parts to save money. The same return spring could be used on 1/2 and 3/4 even though the shoes are a little bigger on 3/4T. The arm chair or looking at a computer approach is NOT suitable for many parts. Take the old part to Napa and compare. If that does not work, there are many spring kits/universal brake spring/hardware kits with lots of brake springs. Buy the kits LOCALLY and take them home and try them. If none works, take them back. If that does not work, measure the hook to hook of the spring and the diameter. Use those dimensions to buy donor parts on Ebay. The sellers don't know what they have either, but the dimensions will help you decide. When we run into these things, we must do some work and leave the arm chair. Sometimes we may need to buy a whole brake backing plate with all hardware to get what we need from Ebay or craigslist.
To Poster
1960, being the first year for the new designed truck, probably are different than later 64-66 brakes. Put a wanted ad here on Stovebolt and you will get action. Moderators don't like you to ask for parts on non classified forums. The 60-63 parts can be the most hardest parts to find. It's going to be something like Raybestos H131.
