210° @ Cruise and 180° @ Stop? What's Going On?

I found this image of a hood to radiator seal. (Courtesy of FABO) Does everybody run this? I see it's available from a couple vendors but... it's not the most aesthetically pleasing piece. I don't recall seeing this on the last few Dusters I checked out at the local shows.

That is one of the most important pieces of the cooling system.

It keeps the hot engine bay air from being drawn back over the top of the core support and recirculated through the radiator.