i have been noticing some extra vibration in the front right when i go over any significant bump. kind of a shudder-like sound. about a week ago i hit a pot hole and heard a distinct heavy thud in the same area. steering is tight, and handling is good otherwise, so the shudder has me thinking new shocks are in order. does that sound like the right diagnosis.

i should add i went back to the PO's maintanence records (dating from 1989-2002, about 100K to 230K) and there was no shock replacement noted. am i overdue anyway?

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1979 300TD wagon (non-turbo)
266,000+