Wiper linkage questions 67-9 cuda

Steve I hope all my quick n dirty research helps you out. I am assuming the 2770116 will work on 68 and 69 prestolite V speed since it will fit those shafts. In my prestolite box I have a date coded 67, and a date coded 69 prestolite motor. Shafts are the same on both. 2770116 will prob work on the 67 2 speed as well, since what makes a 67 a 2 speed or V speed is the type of switch in the dash and not the wiper motor. Vspeed switch has 2 detents. Off, and on/thermostat. 2 speed has 3 detents off, low, high and has a resistor on the switch. Both switches plug in the harness the same.

68 and 69 both V speed and 2 speed switch plug in the same in the dash, but sub harness under the hood is different. V Speed plugs right into firewall bulkhead, 2 speed has a small sub harness plugging into the motor, and the mounted on motor low speed resistor.