I am going to replace my MACH stereo unit and I was wondering if anyone knew if the amp for the sub was with the sub or the radio. I was going to but the visteon mp3 radio but they said the only thing that wouldn't work with it was the sub. I called Best Buy and they said if I bought a head unit there they could get the steering wheel controls to work (adapter $60), and wire the sub to work. If I could get the visteon radio and have the sub rewired I think I am in buisness. Thanks for your help.

The amp is located behind the rear quater panel just to the left of the sub.