Halogen assembly to HID
 

In some countries the frs comes with either projector halogens or projector HID's does anyone know what would be needed to change the entire halogen lights to the HID headlights, what would the wiring be like and what extras might be necessary

Cheap way is a plug n play hid kit with bulbs, wiring, and the hid ballast. However the halogen projectors are not meant for this and this can blind those in front of you. There is something called a squirrel finder that should be bent down to stop the light from reflecting to far up. Otherwise get a retrofit kit with the proper projectors and mounting brackets for the oem look. The Retrofit Source sells a premade retrofit kit if that's the route you want to go