Don't concern yourself too much with the oversize bearing retainer.
If you have a bellhousing that takes the larger of the two "normal" bearing retainers you can pop the retainer off and have it turned down to fit.

It's about the easiest operation you can do on a lathe and takes just a couple minutes to do.

If nothing else, you can sent it to me and I'll turn it to size. It would take longer to put it in a shipping box than to turn it down.