1973challenger360:
You could secure the scoop to the underside of the hood; when you raise the hood, the hood & scoop are now joined together. Still looks like a full shaker set up with the hood down, but you wont need to buy the baseplate, adapter ring, etc.
The hood vents have moulded impressions where the slats are, but are not completely cut through. You could use an air powered cut-off wheel and make your initial thin cuts, then open the slats up with a hand file and/or sandpaper.
Larry