Can anybody tell me the difference from normal 500e to the Limited?? i need some infomations for the hight of the rear spring. I have here for my normal 500e the a1243243004 with sls.and another option was sa code 958 limited.are this spring shorter as the normal ?? or where the diff for 958. my spring has a blue strip and 4 lttle withe strips.they are brand new and original from Local MB Dealer. Thanks Markus