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.