Will lowering my SH affect the ATTS system? ALso, I have only found Eibach's (prokit) for my car, but I want the Sportline. Are there any other companies that have springs for my car that will lower it as much as the Sportlines? Has anyone done this to their SH and if so, were there any problems? Thanks!

 

In the words of many others-search.
Meantime, yes there are alternatives. Yes, there is a chance that the ATTS will be affected depending on the amount of drop.