I had a rattling/clicking/clunking sound that was sometimes in front, sometimes on back. Had CV joints checked...no problem there. It wasn't clutch or transmission either. So they put the car on the lifts and found the problem quickly...where the cat meets the pipe under the car, an exhaust hanger was missing and allowing the exhaust to sway back and forth.
RN
See Mephisto
2001 Silver LE 5-speed with: way too much to list here (255 character limit)