you may have to modify the housing to accept the LED bulb.
in addition the OEM bulb holder - the black thing with the 3 prongs sticking out of it - seems to show heat fatigue and melting.....seems that may need to be replaced,
OP get yourself some nice OSRAM bulbs and be happy.
sticking a huge LED that generates alot of heat - hence the massive heat sink mounted behind it - doesnt make much sense as you mounting it in a location that is already the hottest part of the car.
how long you expect the LED to last in a hot location and how much energy you expect to save by going LED?
or is it youre aiming for brightness???
OSRAM nightbreakers and be happy.