500E SLS suspension question

[kiato4]

Hey all:
Just wondering, someone told me that the self leveling suspension for w124 500E was a factory option, and that aftermarket spring companies like Eibach and H&R make springs for this application for both non SLS and SLS cars. Is this true or did all 500E come with SLS? Thanks.

[Glen]

All 500E's (124.036) came with SLS from the factory. It was not an option.