Cadillac rear seat floor vents

Up for grabs is a pair of the famous Cadillac D body rear seat floor vents.  They go under the carpet to make your rear seat footwell warm or cool.  I pulled them from my 94 Fleetwood and have had them on the shelf for years.

Brought these with me to Maine to ship to a guy, but haven't heard back from him. I don't want to bring them home.

$40 shipped, the post office is a block from my place.