hey! im buying a brand new 50th Anniversary XR6 sedan (manual transmission, Nitro), and id like to know if its possible to upgrade the sound system aftermarket. The anniversary model (non-turbo), doesn't come with the premium sound system and id like to put a woofer and a couple of 6x9's in it. i read on another forum that someone was having a lot of trouble getting an audio company to modify his system because apparently they said everything is "hard wired" and cant be modified. it sounds strange to me because every other car on the face of the planet seems to be capable of being modified. Does anyone know anything about this?