I'd say T400 was most common in HZ Prems with 5.0L option. Whenever I saw a 5.0L badge on the back of a Prem I jump in the drivers seat and think wow.... Nice car and it has a GTS woodgrain dash as well!!! Pity it's an auto...... Not too often I would think...... Cool, it's a four speed....

Back when I was a youngin...... Autos were a "lazy mans car".