Gene
Stick your neck here, I have the axe ready for you!
I would not fret too much over the 215/216 issue on your car, as either would work.
With that being said, I have run into at least four original cars in twenty years that have the "incorrect" fan on them, though all the clutch units were the 070.
I would say that it's not that uncommon, as they both were a size that would have fit & the cooling difference would have been minimal.
After all, it's not like they were gonna stop the line to do something right back then!