1972 A Body (Demon) Spare Tire Hardware/Install

Interesting - but in my cars the spare tire was always mounted this way - otherwise Yiou cannot check the tire-pressure without taking the tire out of the trunk.
And this is something You should do at least once a year.
I have in both cars long studs - about 2 inches longer as in A-Bodies in the 60s - with a short stud, You can only mount it the way You told.
The hook is stored with the jack.

And here You can see how the Swiss have handled the storage of the jack:

Diverses 006.jpg