hey 4myfast,
watch out cause the headunit is tied in witht eh amp under the passenger seat, and that is tied to the ECU, its not an easy process. i did a alpine w200e install and they need like 12 odd adaptors for it to work properly. even a custom made bypass adaptor was made. so make sure you know what your doing otherwise the car wont start cause hte ecu things somethigns happen and it will just go to kill mode.