Finally got around to doing this How-To this weekend simultaneously with my roomate and his G35. I don't post much but i figured I'd share with anyone interested in blackin out their lights. It went smoothly. Our cars are 10x easier to work on then a G35 though. Take a look. The car is in bad shape since i live and park in the streets in NYC (with is frustrating as all hell by the way) but I'm keepin it as pretty as possible.
BTW, great mod to do-- the look is awesome (although i might remove my yellow fog rockblockers now, feedback on that would be much appreciated) and it even makes my headlights perform a little bit better at night.