Brake Drum Hub Assembly Mystery

Just got thru replacing the front hubs on a 67 bcuda that'd had the hubs ruined by pounding out the studs without removing the swage.
Yes, Machined drums and arc-ed shoes .

"Swaging is a metalworking process that shapes a metal object by bending or hammering it with a tool called a swage. Learn about the different types of swaging, such as internal, external, combination and dual, and their typical applications in various fields."

Cheers