Thanks, AJ. That makes more sense of what I'm seeing inside my 2003. And why Weber just told me that the hardware is 'obsolete'-- they prolly never sold it, since it was integral to the horizontal cross-pieces of the frame.
Once again, the Grillfella's brain trust trumps the folks at Weber CS. It's hardly a fair fight, though, since they only spend about 40 hours per week thinking about this stuff. ;-)