a '56 El Morroco has popped up, and is going to be auctioned off next month. But will anyone care? It's just a customized Bel Air.... because some guy wanted to make cheaper Cadillacs, and he didn't succeed. They cost the same

I came across a 57 El Morroco about a decade ago and haven't seen one since https://justacarguy.blogspot.com/2011/06/1957-chevrolet-el-morocco-one-of-rarest.html 

only about 3 dozen were made, and they were only made in 56 and 57 https://gmauthority.com/blog/2020/12/one-of-32-ever-made-chevrolet-el-morocco-for-sale-at-mecum-kissimmee-video/