****'67 Dart GT fender turn signal lenses****

I can't get the light socket out of one of mine. I do have another complete socket assembly out of another unit but they seem to be riveted in. How do you change these in the housing?

With a small dremel disc, I ground the "rivet" flat and removed the socket holder. When reinstalling. I drilled the housing with a small drill, ran tap down the hole and used a small screw and washer to hold the socket holder in place. I think I have pics on my other computer if you need them.