I'll offer up help on the grille, don't know about the scoops.
Getting those retainer screws out is a little tricky (if it's the same ones I'm thinking of). You've just gotta unscrew them as normal, but put a tad bit of pressure on them while turning counterclockwise. Once you see the head of the screw start to come up above the surrounding area, you can let off with the pressure, and just remove as normal.
Be careful in doing so though, if you plan to reuse them. They're plastic, and they strip rather easy.

I stripped 2 myself when I took the honeycomb grille out of my '99 to replace with the eliminator kit. Thank goodness I only needed 2 screws to hold that in instead of 4.
PS: I have some pictures of the process, but I don't know how good they'd be in assisting you in the actual job. It took me about an hour to do the grille swap...could've been quicker if I had a secure-torx bit (you won't need that though if you're just changing grilles).