71 Dart Dash
I'm in the process of doing just that in my 71 scamp and it can be done but you will need the rallye dash frame as well, you can do it with the standard frame but you have to make room in your dash frame to fit the rallye cluster. You will also have to check the wiring pinouts for your gauge cluster connector I had to swap a few wires around from the standard cluster to the rallye cluster per the 1971 Mopar shop manuals. Contact 72bluNblu here on the forum he has a lot of info on this very topic and if I remember right he has a build thread doing this to his Duster/Demon