Well, looks like I was wrong again. The 7th Gen Civic has a full width radiator with an A/C condensor in front of it. The way the fans were mounted made me think otherwise at first glance, but once I got to looking closer I figured out I was wrong.
Anywho, I put two holes in like so:
While the time it takes to trigger the fans is much longer, it still climbs and flips on. So, I'll have to go a bit larger yet.
I am a little concerned about how much restriction the condensor has on air flow at this point. Nearly every fin on the condensor behind my grill block is bent back from road debris hitting it.