Okay so I am about to get a new mustang gt and It has the shaker 1000 in it (I don't really want it but they have a hell of a price on it) I have a Pioneer Avic-F700bt a nice powerful amp and 2 12s I want to put in and take the stock subs out. I have been reading everywhere about the stock system and I cant find what I'm looking for. I just want to know what I have to do about the stock amp and subs to put my aftermarket amp and subs in.