Hans,
the old four speed hydramatic's tooling was all burned up in the big Livonia Hydramatic plant fire in 1954. Lincoln was even using it.
A new four speed automatic was in large V8 Pontiacs, Oldsmobiles, and Buicks until 1965. It was either the super roto hydramatic, or Jet-a-way. See "Charlie Tranny's" website.