How many using an A500 overdrive ?

sweet. wonder if you could convert the pushbuttons to activate switches and then use a solenoid/actuator down at the tranny to move the shift lever instead of a purely mechanical linkage
I have thought about that..just unsure how you would do it. Part of the problem is that the cable system uses 2 cables. One for gear selection, the other for park. About the only way to do it would be by using the Ebrake for park :(..sound bad. But for those old enough the early push button 2 seped torqueflites had an actual brake drun mounted on the back of the transmission..hence " Parking Brake "