I made a cardboard pattern that fit the inside middle scoop first. 
Then I
traced it onto the mesh allowing for a 3/4 inch lip on the top and
bottom.
This (tab) lip you will need to bend at 90deg.  This is where the
mesh will
attach to the car.  I removed the black metal strip inside the
scoop bottom
edge and placed the mesh tab edge underneath it and then reinstalled it.
For the top attachment, use the 4-5 black plastic fastener tabs that
hold
the front nose section of the nosecone to the bumper inside.  These
are
located inside the top edge of the middle scoop.  Using  this
method, you
won’t need to drill any holes in the car and it provides a very secure
mount. 

A note on the tab bending…bend the bottom tab forward, bend the top
tab
towards the back of the car.  Once you look at it, this will align
the
grill up square inside the scoop and will hide all the rough edges from
sight.

Wear gloves when cutting the mesh with tin snips…its VERY sharp. 
Be
careful when fitting the mesh into the scoop to not scratch your
paint…easy to do.  I lined the inside of the front scoop with a
light
coat of duct tape to prevent scratching of the paint as I fit the mesh
into
the scoop…worked great and peeled it right off after the mesh was in.
Remove the black plastic cover section underneath the front of the car
to
give you access to securing and aligning the mesh from behind.  You
could
paint the mesh any color you want before you install it. 

I looked at installing the mesh into the two side scoops but it looks
like
I would have to rivet it in place.  I didn’t want to do this, but
it could
be easily done.

Happy grilling!