Ended up buying a pair of BEAMTECH H1
LED bulbs -
Their heat sink is too big to fit the Q45's existing bulb mount without (1.) trimming of the end of the retainer spring, and (2.) bending the ground terminal tab slightly outward.
I recommend removing the bulb mount plate to trim the retainer spring and attach the BEAMTECH mounting collar, and then re-mounting the plate before inserting the BEAMTECH bulbs.
Here's a photo of the mount plate, with the spring trimmed and the new collar installed:
The original plastic dust caps wont fit over the back of the BEAMTECH bulbs, so I'm considering ordering something like this
to help keep dust out.
The beam pattern of the BEAMTECH isn't much different from the original H1 halogen, but is somewhat brighter.
(BEAMTECH bulb installed on driver's side, OEM halogen bulb on passenger side. Low beams were covered in order to show the pattern of the high beams only)
The tint is pretty close to the OEM HID low beams.