My 03 Tahoe has Bose sound system from factory and everything is factory still want to add more Bass to it without taking up cargo space. The "grill" for the speaker or whatever its call on the rear side that protects the sub has the shape of the speaker and all but its all seal no little "holes" for sound to come out so will have to cut it out. It doesn't have a box so ill have to get one and a speaker but my concern before I open the hole thing to look at it better what are the chances of the cables from the factory amp for the sub being there? if not is there a way to add the cables to the factory amp? and how? Mine is the very basic Tahoe with just some special request from the factory.