If anybody is looking.. I'm selling the Boston Suspension Passive Ride Conversion Kit for a SLS for both the front and rear. Everything is still in new condition as I only took them out of the bubble wrap to take pics. I bought them for a 1994 SLS a few years ago, but ended up getting in an accident that totalled the car, so I never put them on. Any reasonable offer will be considered. I paid $425 shipped for them, so you can throw some number out there. I have the installation instruction guide and all connectors that were sent with the original shipment. You can shoot me an email to email@example.com for more info and pics. This kit consists of 2 premium gas struts and 2 gas shocks and the electronics to close the loop of the CVRSS computer( suspension computer )... these are Gabriel shocks and struts.