spare tire

Hi All- I'm currently running Achilles 122 All Season Radials -165/70R13 79H tires on my '78 x. It seems that tire is a tad too wide to fit in the spare compartment behind the passenger seat. Could someone please advise of the tire size that would fit? Thanks for your help. -Gerry

I have an original limited use Firestone spare tire off of an X, don't know what year. I bought it for the rim. I got to thinking maybe someone out in X land wants to keep their car all original and an original spare tire might be of interest. If not, off to the tire store it goes to be...