I've always stowed my jack in the latter position versus the early layout
per location change in '66 as well I store tire face up.
I also use a salvaged post sleave from a '67 parts car, I like the idea of preventing possible vibration
and choose to carry a matched tire/rim as spare since I drive it
But thats just me.
Cheers.
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When I die, I want to go peacefully like my grandfather did, in his sleep.
Not screaming like the passengers in his car.