I haven't been able to do anything for the 54-55.1 yet. I was trying to work with a couple of people and ran into a wall there. What I needed was a blank-out plate or something I could use to make a mold from and I wasn't successful. Also...I should tell you I ran into the situation where some of these dashboards had been altered to accept other radios, tape players, etc and some folks wanted me to create something that would work for the alterations that had been made (which is not possible).
I did get a blank-out plate for 1955 through 1959 and will be trying to do something there...not the 55.1, however. If you have suggestions, I'm happy to hear them.