Recommendations for a car stereo set-up?

I think a 75 Duster allows more options. In my 65 Dart, the dash trapezoidal opening doesn't allow much. I got a small HD Tuner off ebay ~$25. They were sold as add-ons to existing radios. They have a thin faceplate you can mount on front of the dash, or in the console. You need an external stereo amp. It also receives regular stations. Haven't installed yet, my interior is currently gutted.