Check the sway bar mouts -- if they are not tight agains the bar, it will thump.

Look at the spring, too -- they have a tendency to break the first coil off when they get old, this will clonk.

Also check the upper shock mount and the rubber in the sleeve on the bottom, if those go, it bangs terribly.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!