my friend talked to a kid who has a 1998 mustang and he said that he went to a local audio shop and they said they would have to re wire his speakers to make a sub work. is this true? i have a alpine 9830 cd player i would like to put in my 1996 mustang gt with the mach 460 sound option. i also have a 12" kicker l7 with a hifonics amp i would like to hook up also. does anyone have any plans for a sub box for a 12" sub?