Mold it to a fiberglass hood, seriously. You'd be opening a big can of worms and you'll never be happy with it trying to graft it to steel.They always crack, it's inevitable. Unless you just want a scoop and don't care about a seamless look. In that case I would just get some large diameter headed pop rivets and rivet it to it. If you use a fiberglass hood you have a ton of different products to successfully graft the two and it will last forever. Probably not what you want to hear but it would be the smart thing to do.
I'm not prejudiced,I think all cars are JUNK!