--Hi To All,The following links bring you to a 3 part article with instructions on replacing your OE transmission with an A518 overdrive Torqueflite:A518 Part 1:A488, A904, A727 Conversion To Overdrive A518 (46RH)
If you have to use an actuator with a new push button controller, then refer to:
A518 Part 2: PCS GSM Push Button Shifter Utilizing A Motorized Shift Actuator
If you want to use your original push buttons, then refer to:
A518 Part 3: Retaining Original Push Button Function Utilizing A Motorized Shift ActuatorTony Rinaldi300-F Convertible