just found this site while looking for info on a replacement sub for the factory subwoofer.it has the audiophile set up and sounds pretty good. i think it wound sound better with some quality speakers that matched rms and ohms.door speakers no problem. almost anything of good quality and some sound deadening would be a good upgrade. but i cant find anything on the sub. any way its a 2008 sport trac awd 175k miles with the adrinaline package.has the common proplems.exhaust manifold bolts needs struts and a nice new exhaust.the finish on the wheels is toast.but overall really clean truck.worth fixing up for sure.