Turns out that the whole bonnet scoop thing is not quite as it was reported by Speedstuff.
It's just that they found that the airflow over the engine worked better when they cut a couple of small vents at the rear of the bonnet. So no scoops I'm afraid, just a couple of grated vents on the rear of the bonnet that you won't even see all that easily. The rest was kind of guesswork by Speedstuff I think (with the best of intentions no doubt)