Added this to the stock Bose system in our 2010 CTS-V. Had to remove the rear deck stock sub to add roll cage but this package along with a NVX XLCA2 provided the bass we were missing. Now I can finally hear the bass over the engine. I was also able to cut out the spare tire cover to hide all the ugly wires making a clean install. Who needs a spare tire when you can add a cleanly installed sub. This is our second sub package purchased, just amazing quality at an even better price. Thanks Skar audio!!!!