Yes, it's an option.
You can have it in the same colour as the rest of the car (standard)
or you can have the black grill.
I think the black grill is pretty cool, especially on a yellow modena with the challenge rims
It's an option called the Challenge grill (from the challenge cars that have it). It was also available on the 355. It is based on airflow and cooling like was mentioned and from what people have said makes a significant difference in normal cooling, especially out on the track where we know things can really heat up.
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