I ordered my K-Mac kit from www.shox.com. It was not listed on their web site direct; you have to email or call 1-800-683-2890 and they will give you a quote. My cost was US$209. This was for a '92 300CE Sportline.

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Steve

1992 300CE Sportline Sophie
1990 300E Emma - in the family
1979 240D Josephine - sold, but not forgotten
2004 Pacifica AWD

http://web.mac.com/dakota/Mercedes/Home.html