There is a service bulletin on the thumping noise. Bulletin number P-B-32.25/27 dated Sept 2001, have them check out the strut stop as the clearance on the rebound stop is possiblty too small.
P/s noises are un-common on that car but on the later cars (1998 & later) the p/s reservoir can cause noises as the filtering screen will restrict fluid flow. Replacement of the reserevoir will resolve that problem. Good luck!
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