Just fitted my 5000K HID system that I received earlier in the week.
The bulbs are fitted with two "O" rings, you have to remove the outer one when fitting to the facelift car.
I found the "O" ring was just too thick and the fit would have been far too tight , best to take the "O" ring off the original bulbs and fit to the HID units.
Everything else was okay and was easy enough to install.
I went out for a drive last night along a particularly bad lit road, I must admit I was very disappointed with the performance. The colour of the HID units makes the view clearer but they don't penetrate into the darkness any further than the original lights.
I think this is down to the bad design of the dipped beam lense and not the HID kit.
I had the car parked on the drive with the headlights on and the beam of light is absolutely pathetic, maybe 4" wide .
Thinking about putting them in the main beam lenses instead and adjusting the beam if I need too.