When I got my first car, a 1966 Chevy II with a Nova badge, approximately the third thing I did with it was update the sound system from good ol’ mono AM to something resembling stereo FM. (We won’t discuss the issues with the cassette player.)
Of course, if I could have held out for several decades, I could have had something like this:
This is RetroSound’s Model 2 head unit with a custom bezel for this particular series of Chevy. It puts out 25 watts x 4, has one USB and two auxiliary ports, and is fully Bluetooth-enabled, including streaming.
The $400 price tag is about twice what I had to pay to get the Powerglide two-speed automatic rebuilt. Then again, one must have one’s priorities, and inflation screws up all these comparisons anyway.