Right then. Several times I've pondered installing a radiator block or lower air dam block, but couldn't quite convince myself to do it at it looks like there's just a tiny crack to put the cardboard in for the former, and the latter looked like too much effort. Anyways. In examining the front air dam, it looks like there is already some kind of plastic louvers in there. I don't recall seeing these on pictures of other insights. Did the previous owner already install some kind of block, or is it just my memory failing me?