Tranny output flange and seal

After replacing my front control arms and one axel boot I still have a slight clunking noise when going into reverse and/or when wheel turning radius is fully extended. My mechanic has diagnosed it as the tranny output flange and seal.

There was a thread on here however now is only viewable via archive: http://www.rs6.com/archive/index.php/t-25719.html


Mechanic took apart my existing output flange and seal and cleaned it up and put it back together which improved the issue but did not resolve. We could not find correct part #'s at the time and Audi Dealer was of no assistance. Mechanic suggests getting it replaced which he could attempt or I can bring to a trans specialist.

I'm trying to determine if this part which is described as a upgrade forA8 as seen on http://forums.quattroworld.com/a8/msgs/32544.phtml is the correct part for the RS6.

If the link is not the correct part to fit the RS6 does anyone have the correct OEM P/N's and/or suitable aftermarket upgrade parts info to fix this issue?
Thanks