Spend the money and do it right. I have gone the junkyard route and the chinese route.

DO NOT PUT A CHINESE ONE INTO A CAR WITH SLS.

$500 is absolutely ridiculous for this job. $230 is a bit high but ok. Anyone with a wrench can do this job.

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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42