9" vs 10" drum brake spindle question

I didn't see mention of needing 10" drum hubs. I don't think those were considered wear items, so junkyard. Way back in 1990, I had to search hard to find one for my 1969 Dart with 9" drums. I was in Atlanta for the weekend and found the outer bearing race had spun to ruin the left hub. I tried 3 junkyards in Atlanta but could find only 10" drum cars (no Row52 then). Had to drive back to my rural TN job with the bad hub and finally found a 9" hub in a junkyard there. They used tiny bearings (recall SET 1 and SET 3) in 9" hubs. Indeed, the other side had an outer bearing spin years earlier. Thus, good you are changing to 10" spindles and hubs. In comparison, my 1985 M-B uses larger SET3 and SET5 wheel bearings, same as a GM pickup. I recall the A-body 10" hubs use SET 2 and SET 4 bearings (check Rockauto). If you go with the 1973+ front disks, the hub is integral with rotor, so no worries as long as you can buy rotors.

Scarebird had the least expensive disk kit, but I read here a few months ago that he was closing shop. I grabbed their 10" drum kit (last one?). He didn't have a 9" drum kit. My Dart is 10" drums and my Valiant 9" drums, but I have most 10" drum parts to convert the later, except for one hub (that again!) which I should be searching for. Wifey considers my stocked parts "old junk", but sure is gold when you need them. K-H setups are very rare now. I saw one recently on ebay, but didn't have the hubs so didn't want to risk that treasure hunt.