Heater box swap

I have a 70 Dodge Dart and I am swapping in a dash frame from a 74 duster (so I can have the "square" cluster), I know that the heater controls are different, but will the cables attach to a 72 and older heater box?

If not, will a 73-76 heater box bolt into my 70 firewall. Car is Non AC and will stay that way.

Thanks for the help.