Well since I fit HID projectors from a Jaguar into my 05 Frontier, I decided to do it in my wifes 96 VDP. first I bought 4 new 98 and up headlight with clear glass. Cut out backs and fit Stype HID projectors with ballasts into the backs, I still need 2 more and Ill remove the shields to make Hi Beam HID too. and suffice to say I make it sound easy, it wasnt, but enjoy..they work fantastic
Before:

after:

 

Awesome project - turned out fantastic!! All I did on my 1995 X300 was change the bulbs to HID.... very bright. But of course the projector lamps will be a blast. Planning to do it just like you, but add a little spice to it - BMW angel eyes. Blue would look nice. Will let you know how it turns out.....though will not happen soon; got enough on my plate as it is!

A quick question; how do you adjust the headlamps; just as usual, or are the projectors individually adjustable?

 

they are self leveling......
I open the hood and level them myself.[8D]
with the factory adjustment knobs