When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
A slight/modest drop can be achieved by Eibach Pro-Kit, Tein H-Tech, ITR springs, and H&R OE (you obviously know about these). I don't remember the exact drops on each of these, but the ITR springs are the least (similar to the H&R OE's). Good luck!