If you look at the very first picture posted on this OEM version GB, you'll see that the bottom layer that you'r talking about is just the back part of the under frame. The under frame is the same on both versions, but b/c of the cowl, the top layer is higher on the induction version which makes it look like there's another layer under there.
If you guys choose to cut the induction scoop open, you'll have hot air coming out thru both the scoop and the back of the hood. But you actually don't need to cut it open b/c you'll get plenty of ventilation from the slit in the back.
