When I built my car I made a grill from a generic grill from a wrecked car. I didn't even know what it was from. It was a lot of work to make, turned out good but once painted and installed it really didn't match the front too good being honey-comb. It bugged the hell out of me....
Soooo.....I noticed a 911 rear grill was almost exactly the same grill pattern as the fog lights. With a little hacking and sanding it's installed and actually much easier to make since it didn't need an outer frame.
The "arc" didn't quite match the car (too flat). I heated the grill in an oven at 300 degrees for 15 minutes. I pulled it out, set the needed arc and stuck it under cold water to set it. It turned out pretty good and at least to me, matches the front better.
Before and after....
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