Well here we have one who wants info but cannot get it so I will put my experience in. The W210 has that same engine in it(M112) I have 2 W210's and there engine's are very strong. My Post face lift 210 is more identicle if anything with a tad more power to it. Post facelift CLK is best 00-03 208 Body. Common issues are seat control mod, if convertable make sure the top works as should, intrament cluster pixels tend to fade and rain sensor wipers. All I listed tend to be pretty common issues.

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2015 ML350 4Matic. Wifes DD
2015 GLK350 4Matic. My winter DD
2012 E350 4Matic. Road Trip car
2009 CLK350 Coupe Designo.Kleemann Tune For nice days/DD
2006 CL600. V12.Eurocharged Tune. Enough said
2005 CLK55 AMG Coupe.Kleemann Tune. For the sound and style
2004 CLK320 Cabriolet. 2005+ Interior swap. For the sunny Florida days & beach days