I appreciate all the replies although the discussion morphed into one of installing disc brake conversions. Interesting, but a little more involved than replacing the hold down springs on the original drums of a G.Well, no one had a “kit” with rebuild hardware. Return springs are available from several sources. The closest I found (year-wise) was for ’63 and on 300’s but the hold downs were not the same (pin length or spring tension). As usual most counter monkeys looked in the computer, found nothing, and threw up their hands. I was able to work with someone at a local NAPA that was willing to go through actual paper catalogs. Pins were no problems- choose your length. As for hold down springs in the NAPA supplier’s catalog there were pictures of various and sundry ones along with designations such as Chrysler, GM, Ford, etc but several of each with no other application info. There were over a dozen so they aren’t generic. The retainer cups were generic mix and match. I tried a couple of springs and was surprised how much their hold down force varied. Finally in a Raybestos catalog we found a reference to Chrysler brake systems circa ’57 – ’62. We were able to translate this to a part number in the NAPA supplier’s catalog. This hold down spring seemed to match what was on the car. So correct replacements seem to be out there.Nothing profound but just another adventure in tracking down parts for Unplucked.