I think it's a one off custom hood. IIRC, that car was designed for high speed, not so much drag racing. I could have just read the article to be sure, but that's too easy.
I'm pretty sure it is made by this company:
http://www.multimatic.com/engineering/prototype_parts/compositeparts.shtml
(scroll down towards the bottom for a photo)
Now how you order one, I have no idea!
