Are these swedged or not? help

I am trying to get going on a drum to disc conversion for my 66 dart. 9 inch drums. I understand I cant just beat out the hub, but I have to reuse the hub on the new disc. Also I need to put in new longer studs. So I removed the drum and took it down to a shop, who tells me these are not swedged on, and that they are welded on, and all I have to do is grind off the weld and then the hub should push right off. So are these swedged? they do appear to be welded on. And I think the studs are not original so someone must have pushed out the old studs and put in these new RH studs??swedged - 1.jpg

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