A:Answer Hey there, JSamms! It's great to hear that you're thinking of Geek Squad for this upgrade. We should have you covered with a powered sub enclosure. Feel free to take a look at www.BestBuy.com (I searched for "powered sub car audio"). As for a receiver, that's also no problem! I'd recommend scheduling some time with an AutoTech to talk about what's possible. You can do that by calling 1-800-433-5778, or by visiting https://www.bestbuy.com/services/autotech/search.