Advice on radio delete plate for 72 Demon

I've been looking for a radio delete plate for my 72 Demon. I may have found one, but am not sure it will fit.

What I've found is a "full panel" radio delete plate from a 74 Dart. It has the cut out for the heater controls, but was molded without the opening for the radio.

Can anyone tell me if the heater controls for 72 models are the same size as 74? I'm concerned that the controls may be bigger or smaller, and not fit properly in the opening.

I've attached a picture of it for reference.

Thanks in advance,