Anyone knows the different in headlights?

Is the zc civic's headlight different from the usdm headlight? I know you only use one bulb, right? Like this one.(zc) http://files.automotiveforums.com/gallery/watermark.php?file=/503/294028e2_1.jpg

the cover is plastic instead of glass. also there are no knubs on them like the us headlights have.

Ain't that a little better. Well it replace the usdm civics with out no modifications?

yea. only mod is wiring the light. it will bolt in place of a usdm light.

Doesn't the plastic tend to fade, eventually giving you less light? I only ask because our Mercury Cougar had plastic covers for the headlight, and they eventually turned yellowish.

meguires sells a plastic polish that will get rid of the yellow
it works great, we did it on my buddys stang and it turned out great