F70-14 tire ?

Ive been looking for a tire to level out the stance on my 74 duster i was running 195-60-14's on the front of my car with 225-70-14's in the rear. I tried several used tires that were around and they all rubbed. Then i thought about the spare that came with the car and put it on, fit like a glove the perfect size F70-14. Ive never seen a tire sized like this is there a modern equivalent ? To assume i know absolutely nothing about tire sizes would not be too far off lol. Thanks in advance