Would I be wasting my time in this endeavor or not?
I honestly don't know. When I first went to Hershey in 71, the 29-32 era car brands were reaching their peak of popularity, or so it seemed.
the things to think about is the age of average owners, and if they had their car for 40+ years, they probably would have found some if they wanted them.
next is cost; the more made will lower the unit price, but how many have sidemounts, and of those, how many would buy these?
29-32 era will always be my favorite, but I see that most are getting street rodded, and they don't want sidemounts or mirrors.
If you want them, and don't care about sizable profit return by the time of the last pair you sell...and enjoy the task, I would go for it