Frustration with drum hub

You can leave the studs in the hub, unless you really want to change to right-hand threads, and that would be driver's side only. Many cars besides Mopar used LH threads, so no excuse for tire guys spinning a stud. Goodyear monkeys did that to me and put it back without telling me, which I found on the highway when trying to remove the tire. I guess that is why they won't let you in the shop to watch them FU your car. I now bring the wheels in so less a tire shop can mess up.

I think swaged studs were before 1969. I don't recall my 1969 having them, but if the drums were changed, somebody already removed the swage. It was only to simplify factory installation and isn't needed with a new drum.

The way I remove a front drum is to find an remote parking lot and drop/throw the drum on the asphalt so the drum hits evenly around the sides. Repeat until the hub falls out.

No need to replace the hub unless a bearing race spun in it. That happened to me in my 69 Dart in ~1988 and I couldn't find a 9" hub in 4 junkyards in Atlanta (only 10"). Finally found one in rural TN. It is not a normal replacement part, so unlikely to find at an auto parts. Plus it would be expensive. Most mechanics would get a used one, which is why we need junkyards. The public doesn't know how the sausage is made or how their cars get fixed. When you can't find a part, try www.rockauto.com.