Pull out the air-con vent surrounds, just with something soft, like ruber, so you dont scratch it, then youll see the slides, unscrew the 2 bolts on each side of the head unit, DONT LOSE THE SIDE PEICES!! then you should be able to slide out the head unit, slide your new one in, along with a cavity spacer, usually from jaycar or strathfield and repeat the process. Enjoy :D