Yup, A230; swapped a mint one out of an E-body into a '64 Savoy Poly 318 to get the synchro 1st. Fairly wide ratio spread. Looking through the FSM there are 2 A230s, with different strengths & ratio sets. When I later did a BB/727 transplant on the car, took a couple years to sell that trans for $150 with a floor shifter.
The 3-speeds seem to be gaining in popularity now.