Period correct 70s aftermarket AM/FM radios
 

Hi everyone, this isn't truck related, but I think you might still be able to help. I have a nice custom auto sound radio in my 67 Biscayne. But I really don't like it's functionality, and I would like a basic vintage am/FM with simple, non-digital, knob adjustments. What aftermarket brands of radios were people buying in the early 70s? I've been looking at a lot of vintage radios on eBay. I would buy a Delco, but I believe that they are 67 only and they're really expensive to find a nice working one. Thank you!