i just swapped my oem's out, all in all less than 2 hours with some phone calls, txts, forgetting stuff inside, etc. i'd say plan on 2hrs. i did not remove the lamp washer stuff, i just CAREFULLY maneuvered th assy around the area to get the lamps/housing out enough to remove the bottom lamp screw. imo the biggest pain is the lamp screw in the upper corner in the wheel well.
unfortunately my oem's may go back in due to the adaptive malfunction light, unless i can find a solution.