62 Fairlane,
Don't worry about the ball joints. That is normal. If you look at a factory one they will look the same. I know they don't look like they really have threads but thats they way chrylser made those. They do screw in, hopefully you have the correct tool for installing them and make sure you grease the threaded parts before you try turning them in otherwise they will weld themselves to the control arm by galling the thread and make sure you turn them in straight and not cross threaded.
Hope this helps,
Kurt
www.autokraft.org