on the stock headlight housings, are the square-with-hole things different sizes on left and right, and in slightly different positions? Mine are. Also are both of them marked the same? I don't mean the diffractor stuff, i mean the part numbers, DOT whatever whatever, "NISSAN" and RH/LH? Only my LH lens has the Nissan designation.. the other doesn't really have any Nissan info on it. Nor does the bulb fit as well, nor does it have anything printed in black at the top of the housing on the plastic.

do i have a non-OEM housing on my right side??

 

that would be my guess

 

yeah. it's strange because they have the same glass cover with metal clip setup... but ionno. I guess i'll just wait until i can afford a HID retrofit, and use my 9007s in the mean time.