The older cars (with 32" wheels) do require special effort to load in an enclosed trailer. I have noticed that some members have to lower the tops (tourings) to get them past the doorway. Bill Vigus had a special trailer height constructed for his Flint.
But rather than have a special trailer designed/built there is a 'beaver tail' option (the final 4' of floor in sloped) that works with the touring I have.

Where Are You From? Tucson

Do You own a car built by Durant? yes