There is a TSB on the 2000 Outback which refers to the clunk-turn noise, which is apparently caused by the inherent design of the steering rack. The fix is a damper. There was never a recall on this and many Subaru drivers live with this noise as I do. It is a minor annoyance to be sure.
The noise does not affect drivability and it is not a safety issue, so, you would be wasting your time searching for a recall notice.
The 2000 Outback and the years following have been good solid cars for Subaru.
Hope this helps