LS 400 strut bar cushion

[bobirw]

I have replaced various parts of suspension but still get a "clunk" on small bumps. I have seen in earlier post where others had similar problems and problem was this "strut bar cushion" which is described as a donut shaped bushing and strut bar fits through the center of the cushion and held fast by one large bolt on the end of the strut bar. Here is one post from 2004 mentioning "strut bar bushing". http://www.lextreme.com/forums/showthread.php?t=956

I am just trying to find a diagram showing this part. And best place to buy.
Thanks, bobirw