re the change over. It is not a direct swap. the corona ones need new brackets fixed onto them to aid location, the old moulded ones need to be cut and sealed as they foul the wing. You have to (uk anyway) chop the wiring connectors arround to make a good fit, you also have to add a second side light bulb, as it only comes with holes for the turn signal bulb. The front slope off the new corners differ from the grill, so you will have to bend the metal locating tabs back to bring the elements into line, which is a PITA, mine still not pefect. The lights are narrower than the OEM ones, so you end up with a small gap between light and grill at both ends, still not sorted this. Hope this helps