Mine are the 1951 version (AD) so you might be asking about the 1954 version(TF). I got mine from a Stovebolt forum member who had them on a truck in his area(NY) of the country. I posted/asked in the Stovebolt "parts wanted" forum and he got in touch with me.
I do not know if the AD mirror long arms are the same ones used on the TF trucks. Sorry.
