There are still options for the old "2 knob" radio design. Most do not include a CD option though.
You might want to look around in a salvage and see if you can a later Gen 1 radio faceplate and mounting bracket to accept the DIN type radio. I believe they started offering the DIN type as early as 85, since that's when they converted the F-series to the DIN type.
This would open up the possibility of adding a CD player, with untold options available.
I did this in my 80 F150, using factory 85/86 faceplate and radio mounting plate.
I cannot recall if the early rangers had a seperate radio trim bezel, like the full size trucks do, or if the entire cluster/radio trim is all one piece. Been too many years since I have been inside one. It was an 86, and I remember it had the DIN style radio.