Here's another add link. Also more pics in my racerspace profile.
http://www.racingjunk.com/category/1072/Plymouth/post/1449666/63-Plymouth-Valiant.html
You'll need a 66-67 speedo cable. Those are the only years that will work with the newer A904. You can get a new one for around $15. I ordered my through local parts store.
That looks pretty sweet! I have a problem with my manifold boiling the fluid out of my master cylinder. I made a shield which helps, but I'm not satisfied.