securing fan shroud?

[badform]

Hey gang!

So, I replaced the leaky 4 row radiator of unknown origin with a nice 3 row and a functional fan shroud. I didn't change the lower radiator mounts, but everything went together in a way that seemed like it all meant to work together. So far so good.

However, I don't see how to secure the bottom of the fan shroud. It fits perfectly with the radiator, and looks like there's a tab on each side that should slide into something, but I don't see what that something is. The lip of the core support is a bit below that, so maybe I'm missing something. Possibly I need new lower rubbers?

Does anyone have a picture of how the bottom of their fan shroud is secured? That would help a lot.

Thanks!!