Although, i've not purchased this item...you might wanna check out
Mercado Industries, I bought their gill covers, and yesterday,
Marc Haibeck said he really liked them, made them unique to the car.
I spoke with Mr. Mercado a couple of different times on the phone,
real nice fella and a corvette owner himself. He told me that his stainless
steel grill, that covers the opening of the air intake area under the license
plate., actually helps cool the air...here is the missing link,
the gill plate pic of the 84 to 90 car is my car...
http://www.c4dhr.com/c4product.htm