Couple of questions

While driving to work this morning a rock from a dump truck went through my head light lens on my 84 300SD.
I just looked up the part on this web site and could not find any parts that look like the one on my car. ( I"m not sure if there called a lens)
All they have is frames and sealed bulbs. I also looked in my performance products catalog with no luck.

Now for the next question my heater blows hot air all the time.
It comes out the dash vents and the defroster vents.
It seams to stop blowing when the car comes to a stop .
When the car picks up speed the hot air comes back on.

Thank in advance, Pete