FWIW,
If it is the upper control arm bushings sliding fore and aft, you usually only notice it at low speed and only after the car has been loaded one way or another. For example, if you back up slowly and brake it will load the sliding bushings forward. Then when you pull forward you will hear (and sometimes feel) a dull "clunk" as you brake and they move aft. They slide longitudinally along the bolt within those chassis mounting 'ears'. Sometimes you can see evidence of the sliding action if you look closely...but again it's only a 1/4 inch or so.
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Jim
VR R1 FD
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