Go with the 215 70 14, it’s a 1/2 taller than the 205. I have 215 70 14s on a 65 dart and they fit and look great on it. I have a 70 and if anything the 70 needs at least the same size.
I have, as stated before, 205 70 15`s on my 68 fastback, about 400 miles on them, would trade for 215 70 15`s in same shape , and what I would buy if doing it over .
