I finally got my Kicker sub woofer from GM after 3 month back order wait. I have been following all the treads on the stock Bose system so far. I think they may have delayed the back orders for this part to do some adjustments to it. The one I have is enclosed in a shell with the stock storage area built in. I did get the Kicker dial adjuster and asked them when installing to attach the wire and I will run the dial after to the consul. Dealership guys are friends and so I trust them telling em there is no place to plus the dial in the new system without opening it up and that would void the warrantee. The system is now redesigned to work with the GM Bose system and use the built in equalizer to adjust the bass. So I did just that, adjust to the sound I like and it really did improve the sound overall. I listen to mostly classic rock and country and ran some tests with favorites, I was really impressed with the upgrade. Test songs- Blake Shelton, God's Country- Pink Floyd, Money-Queen, Another one bites the dust.