I can't answer your question about availability of old wheel bearings... all the work I've done is to replace spindles brakes and all with substantially newer stuff, never looked for the old ones..

I do have a set of front spindles through drums from a real low mile 53 2 ton, could be what you're looking for, complete with good used bearings and all. Not sure if shipping is worth it though, they're heavy. Send me a PM if you're interested.

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-