todd, i've used both moog and ac delco joints, quality parts, usa made. stay away from the 'white' box crap, offshore made, you'll be redoing them again in 6 months. merry christmas
Most likely, yes. As far as I've seen even the OEM replacement joints come that way as well.
Of course if you're my neighbour with the restored 67 SD 396, you search until you find the right rivets and put in replacement ball joints with rivets so they still look original. He's the same guy who put the runs in the paint on his front inner fenders to duplicate the runs in the factory paint...
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
stay away from the 'white' box crap, offshore made, you'll be redoing them again in 6 months. 
