(preface: I thought that having White Post rebuild a "separate" valve would simplify the R&R process - everything on my car could be done at one time - vs having the car sitting/apart for a month awaiting the rebuild).
I have this very clean Kelsey-Hayes proportioning valve from my T-bird for sale. Apparently this same valve was used across brands and models.
One of my friends got a valve from a Thunderbird in a junkyard, and I had that rebuilt and my buddy installed it. In hindsight, the appearance of the one from the junkyard is not great - but it's not visible, and my T-bird is not a show car by any means. With that said - my car is a totally rust-free/west coast example, resulting in a nice valve being leftover. It would be great to see this go to a good home.
Price: $150 plus shipping from NJ.
(https://i.imgur.com/Nj0XddS.jpg)
(https://i.imgur.com/TKBZfk6.jpg)
(https://i.imgur.com/XxJmlxY.jpg)