I discussed this with Fred at ViS Racing and we came up with the following:

1. stock
2. Hood vents
3. See through glass like the corvette z1

They can make us anything we want but they wanted us to settle with one type. As you can see on videos on youtube their hoods are mighty fine. Personally I would like to have some hood vents like on the C63 amg.

2012-mercedes-benz-c63-amg-coupe-black-series-hood-scoops-photo-431487-s-1280x782.jpg

Here is something they made for c63:
http://www.visracing.com/newcatalog/...D=6476&image=0

I do think it will be easiest if there is just a stock reproduction.