No prob, this is what message boards were made for, not talking about which JDM body kit is mad tyte.
Just like most projects this one may not be as easy as it seems. Miatas have the luxury of having thier headlights realitively flat. This makes it easy to just attach a sheet of plexi glas or plastic or whatever that is shaped to fit. However, the front of MY 240 has a fairly sharp curve right at the bottom of the headlight.
The easiest solution would be to make a piece of wood that just fits under your headlight cover, then take a piece of plastic, heat it and bend it over the mold.
If you have ever looked at glass or clear plastic that has a curve to it, it kinda distorts the image you see behind it. Now this curved section is directly in front of you lights, it may or may not distort of diffuse your lights.
Just a thought, good luck with your project
-Matt