I have a Mach 460 sound system in my 03 GT. In my three years of owning the car I have managed to run it into the ground I took the car last week to Mobile 1 Audio and the tech advised me that the Mach system is the top of the line and that they had nothing that he would recommend that would come close to sounding as good as when I first bought the car. He recommends that I take it back to Ford and let them reinstall a new system. I want to upgrade to the 1000 system. Does anyone know how much I would be looking at to get one put in? Also my Mach 460 came with two AMPS in the trunk. Is this normal? One of the techs said that they normally came with one and this is the first time he saw one with two.