Early A-Bodies

Mr. Plymouth said
The reason why is because they were not featured in any TV shows, movies, restoration shows, YouTube, etc. The panels are not interchangeable like the later A bodies. The crappy single master cylinder with drums all around. Small bolt pattern. Stupid right handed lug nuts. Clearance issues with tires larger than 14". Push button transmission controls. No AC, power steering, power disc brakes. Those reasons alone turn off people. Plus they weren't sexy like the 67 and up cars.

Highway Patrol had early Dodge products, Sky King had a few Plymouth products, and in I Love Lucy, Craig takes his driver's test in a '65 Dart GT.

Not sure where you're getting your information, but most of it is wrong.

Most of the remaining A-Bodies have been converted to dual masters and a lot have been converted to discs, but 4-wheel drums were available into the 70's. Same with the SBP/BBP swap. Wheels can get just as big as most other A-Bodies, though I can't imagine going bigger than 16" and expecting it to look good (I assume you mean wheels larger than 14"). Pushbutton went away in '64 and that makes me sad - totally cool feature that my '65 doesn't have. My '65 does have dealer installed A/C. Don't want power steering and if I do some day want power discs, I can add it - just like someone with a later A that didn't have those features would have to do.