I have a shaker 500 in my 06 GT and i want to upgrade as its past its best. Can anyone tell me will the existing harness hook into latest tech or do i need an upgraded harness to hook into the existing one? I looking for a double din with Navigation, Bluetooth, all the bells and whistles really. I live in Ireland so I will be trying to source the stereo here and possibly wiring loom too if possible but if not then in the US. I think its called an iso adapter loom? Also do i need any facia to...

Stereo upgrade help