No, 70 was the first year for the key in the steering column. 69 was the last year for the key in the dash.
Check the wiring diagrams. They added the Buzzer in 71 that went off if you opened the door with the key in the ignition. It's an extra yellow wire in the steering column.
I found that putting a 70 Dash/wiring in my son's 71 Valiant.
It's not hard to add or delete that circuit depending on how you feel about it.
