Hey I just ordered a Z2, I am putting it into a 2001 Ford Mustang GT with the Mach 460 sound system and I'm wondering what steps I will need to take in order to get it done while keeping the stock speakers and amps. If anyone can help it would be greatly appreciated.

The books say that a 01 stang takes:

Factory amplifier integration harness: Metra 70-5701 or 70-5519

Dash kit: Metra 95-5026

I'm not completely sure about these harnesses. I would probably call metra up and ask them.