I doubt a satellite more door is an "undesirable car" Any B-body now a days get attention. I found this out because I also have a satellite wagon and at first you wouldn't think a wagon would be anything but after some of the offers I have had for it, I don't think any B-body classifies as "undesirable"
For that matter, I would go out on a limb and say the 71 duster in question is not an "undesirable" car either. However I have found an unexplained prejudice against cars like the duster in original form.
people tend to act like slant sixes and drum brakes are poison when they have functioned for the last 40+ years.