I have a 2006 Mustang GT that has the original single cd player head unit. Last year I replaced all 4 factory speakers as the previous owner blew them out. My question is can I Install a shaker 500 6 disc head unit into my car? I noticed when replacing the door speakers that there were additional wires that looked like they were for the optional shaker upgrade. My primary question is does my factory setup have the wiring to support installation of a factory shaker head unit? Thank you...

Upgrade factory cd player