Spare Tire ?s

Definitely over 10 years old.
Didn't think it was the right bolt pattern.
My gut tells me to get the full size spare.
The trunk floor was level (there was a 2" X 4" inside the rim holding it up).

I assume these cars (340 Swingers) came with E70-14 tires(?). With that said, would a 14" X 5 1/2" wheel (small bolt pattern of course) with a P205-70R14 tire be sufficient?