I am in the process of replacing my 3-on-the-tree with an auto on the floor. I have the console for my 1970 Duster and I am looking at an auto shifter out of a 1968 Charger. I can't see the difference by the pictures I have but I don't want to buy something and have to try and re-sell it because I didn't do my homework. Can anyone help me with my homework? (Its been a long time since I have said that!)