when replacing struts these parts should definitely be replaced:
54329N — can be made from gasket material
54325 — the bearing grinds if bad
other parts you can replace depending on how rusted they are, or, if made of rubber, how rotten. Strut bellows are usually in pieces and they’re not exactly cheap either.
Having said that, if you’re fixing clunking noise you really ought to jack it up on the frame or subframe and wiggle the tires and see where the noise is coming from.