Radio delete plate does not fit.

I have the factory radio out for all the work but interm wanted something to cover the holes as I’m not sure how long it takes.
My car is covered and put away but I have access to it with little effort.

I guess the factory radio is a must and will go back in. I did not plan on the radio working as the fender antenna hole was welded up and cleaned up before paint.
I use blue tooth off my phone with a speaker but the factory looking radio should match the car. But if this plate worked....
I may have just redid the radio and shelved it Incase it was ever to go in the car it was done to properly match all the work done on the interior.

I checked EBay for a larger delete plate from like a Belvedere or Charger of the same vintage. Only the plate I have comes up for all A-bodies.