Basically the kit for an E92 that they sell at
www.specdock.com I have used for 8 months its 100% clean and has been professionally installed and removed from my 335i I had and I am now trying to sell it.
Here is a link to the eBay ad:
Ebay Link for SpecDock 2.5 Kit with all original cables etc
Please contact me through eBay with any questions.
Asking $500 OBO