I just used some of Turtle Wax polishing cmpd on the '92 GT's headlight covers/lenses and it made the dull yellowish covers turn clear and almost brand new looking. And to think the thought of buying new headlight covers/lenses crossed my mind

. Just letting you LX and GT guys know (just in case you didn't).
Also, I used Blue Magic's aluminum/chrome/metal polish and did a rim (polished aluminum Weld wheel) on my '79 to see how it looked. HUGE DIFFERENCE. Looks exactly like brand new. I had no idea it would make such a difference.