UCA and tie rods wear out the front tires really fast. Look at the rubber around the UCA if it is cracked and loose, then they are bad. My UCA and tie rods were so bad you could hear like a metal on metal sound...but NOT a clunk. The steering will be wonky too..hard to control
I have read that if the sound you are hearing comes from the drivers floorboard or a thumping near your left foot it could be the guide rods

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