Rear Anti-roll bar

As far as I can see, there are basically 5 Audi components involved in the rear anti-roll bar setup for the V8. (not counting nuts/bolts, etc)

Different cross member-
441505099A- no ARB
441505099F- with ARB

ARB- 4A0511409B
ARB drop link- 4A0505389
Rubber bearing- 4A0511327
Clamp- 855411335A

The 'drawings' on etka imply a different rear wheel bearing carrier, but I didn't see anything to show different part numbers.
The orientation of the camber arm inner connection may be different.

Has anyone succesfully retrofitted a rear ARB? Or even an alternative supply?

Any comparison photos available or known about?