I believe that all TMs, at least 2619 and up, have both an inside and an outside shower. Neither was an option, at least in my memory which goes back to about 2000. It is possible that some models from the 1990s did not follow this rule - my memory does not include the earlier ones.
You could confirm by using The Wayback Machine (web.archive.org).
I will not even try to speak for the smaller models.
Bill
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