Welcome to the Team John!
I have no idea. I would go to the bone yard and remove one off of a Parisian or a Delta 88, a Buick Electra 225 or a Cadillac Fleetwood or Brougham. They will have the factory wiring harness, the actual powered antenna you want, and the control for it built into the better quality AM/FM Stereo radio that you will need. You can find a powered front seat and power windows that will also transfer into your entry level Chevrolet. I installed the compete interior out of a Buick Electra 225 into my 1985 Impala. I loved the powered split bench seat as it gave me a bucket seat big enough to fit my bucket.