I found th elink to the thread for the quick install. It applied to a w124, but it should not be too different from the w210 spring install.

H&R Spring Install Procedure (Quick and Cheap!)

Alon

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'92 300CE - Sold
2004 C240 - 744 - C7 Wheels - Android Radio
2002 C320 - 816 - Sport Wagon - Sold
2006 E350 Wagon - 368 - Dead
2015 GL350 Bluetec - 197U