Maybe an aluminum housing, but you are not going to do this with a 50yo cast pump and a vice. Trust me. I have separate many more then I have rebuilt. The casting can break if not properly supported. While it is easy to pull the hub off, your not going to save the stamped impeller unless you support it correctly and press the bearing out through the front. That requires a long, and properly sized fitting to sit the snout of the pump on. Pushing out the through the rear requires proper support of the casting as close to the impeller as possible to avoid stress on the casting.

I am no machinist, but I did have access to a press and the various fittings and plates to do this right.

Kellogg Automotive is another site with documents on the installation procedure, and the shaft seal info and set height. You need to do some homework first, but it isn't hard if you have access to the press and some basic material to work with.

The bearing will have stamped part number, the key is if it is already over sized OS. Many are. You want an oversized bearing shaft to ensure good grip on your hub and impeller. Or go with new. The hub is something that may not be seen once pulley is on, but an original is an original, and the aftermarket stuff is not. So if your going for total OEM look you have to save the hub.

I find it hard to believe that a dealership mechanic could do this in 12 minutes. A rebuilder siting at a bench doing this all day maybe. Hard to believe you could make a living doing this in the 60s.