The rear drive on my '03 ...
i haven't had my rear drive apart, so i have no idea if i've got the 17-ball upgrade. but i've serviced the rear-end oil twice now ... the most recent time this past weekend.
there was a bit of dark sludge near the magnet, but none of the shiny metal bits that others are fretting over. should i be worried? LOL.
of course, soon as i make this post that bearing will probably eat the dust in the most dramatic possible way. such is life.
so far, 25k miles on my LT and no problems other than a burned-out low beam ... now replaced with halogen.