Headlight question

[04ZTSJelf]

I figure it is, but I have to ask, is the clear bit (covering, I guess) of the headlight housing replacable, and where would I find a pair? I think I have the black housing SVT ones on my car but I can't tell because the clear isn't very clear. I did a headlight resto on it and it helped a little, but alot of it is on the inside, and one has a very small crack (I presume a rock hit it?). It looks black on the inside, but it could just be so dark. Also, my right headlight just shines a straight beam alittle above the left (which does the proper lighting). It was like that when I got it. tried to adjust it, which has no effect, then switched bulbs, which had no effect. I figure it isn't supposed to do that so does anyone know whats up with it?
Thanks for any help.