I only Know of 2 good shops in the area. One Is Marksound on roselle road in schamburg, the other is rays electronics in addison on lake street (just past the rising pheonix tattoo parlor). Don't get a stealth box they can custom make you a good box cheaper. Rays has an excellent selection of speakers, subs, cables and components. You should check out both places as they each carry different brands. Also depending on what size sub you want check out lmiwelding.com for rear seat lift kits.