your going to have to remove a coupe of panels to get the head unit out. first two panels are the 2 silver panels on either side of the head unit, you need to pull those out as they are clipped in pretty firm, then you will need to pop the top air vent/tray off and then remove the fascia around the head unit, there is 4 10mm bolts that hold the head unit in, take those bolts out and the unit should come out. as for the kenwood unit, you may need the double din side "ears" kit to cover up the sides as OEM unit is an odd size, im pretty sure you can find the fascia kit on ebay.