I went through the same thing with the '48 2 ton.

My bearing shop was able to locate some, but didn't want to get them because the price was insane. In the range of $300 per bearing. I couldn't find any other suppliers for new parts.

I found some NOS parts on Ebay at normal prices.

If I hadn't, the next step was to convert to tapered rollers. There is no drop in match. My bearing shop is really good at working with customers and was sure we could find a combination of SAE and metric parts that would work and only require me to do a minimum amount of machining to modify the hubs.