Delta V installed Eibach Prostreet Coilovers on my 328i non sport. Jeff is great, he worked around my schedule and gave me a very competitive price. If you are in the area and need performance / maintenance work they are the place to go. Here is the thread where I threw on some pics.
http://www.e90post.com/forums/showthread.php?t=156551 
www.DeltaVMotorsports.com
804-355-4440