Front end clunking on my 82 300sd with 250k miles.

The sound is most noticeable when the car is moving slowly and going over some uneven road. I have looked under the car with the wheels up tried to move some of the connecting joints and bushings but nothing seems to be loose. On the bigger bumps you don't hear the sound. Front ahocks are OK and these would have to be really worn to clunk.

Any thoughts.

Brian