hey guys, Im looking into installing a nice stereo system in my Marauder and I want to put the sub box in the trunk where the spare tire goes so I dont lose any trunk space. But I noticed a black box mounted right next to where the tire sits (looking at it, its on the left, tire on the right). What the hell is that box? I cant figure it out. Im guessing it the stock amp? But Im not sure. If you guys can help me out, Id appreciate it. Thanks.