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Replacing 2003 ES300 struts - suggestions

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2003 ES300 - 209,000 miles

I have developed a "clunk" that seems to be coming from the passenger side trunk area when hitting a pothole or pavement change. First thought is a strut or mount going/gone bad so will probably replace all 4 struts. Need suggestions on whether to use OEM parts or aftermarket parts and sources. I prefer a smooth ride versus performance handling. Suggestions on the parts and process appreciated. Should the struts be replaced BEFORE or AFTER a full alignment? The work will be done by a shop, not by yours truly.

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Struts are discussed all the time, but my choice is KYB struts and OE mounts....Have put them on RX300 and RX400h and a GMC Yukon....Love these struts. the knock noise is probably broken mount, but could also be a damaged stabilizer bar mount....

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