I would think you will get all sorts of opinions on this, but Mopar back in the day would make almost anything someone wanted to pay for. I do not know if any /6 cars had any of these (or any) options but I would not be surprised if there were some. That said, most /6 cars were considered "base" cars and therefore generally very low option, however anyone could order a car back then and specify what they wanted. The problem is that since all of these options could easily be applied to a /6 car along the way, if the fender tag and/or broadcast sheet doesn't specify it came that way, there is no way to know if it did or didn't. Many "experts" will jump and say this or that "never" happened only to have one show up that is documented so when it comes to Mopars, "never say never"..
If you are asking because you are looking at a /6 car that has one or some of these options and are trying to determine if they are factory, you need the fender tag and/or broadcast sheet to prove it one way or another. No tag or sheet, no one will believe it came that way. It would be cool to have a /6 car with all the high end options.
