I don't believe you have enough fender clearance in the rear.
14" rims came on the 67 GT dart.
14" rims.
Yes
If they are 31x10.5x15 then yes, but they would fit better on 15x8 rims.
YesYes
215 60 15
It is safe to put 33x12.5r15 tires on 15x8 rims because the rim will still maintain a secure seal. The wider tires provide additional traction and contact with the road.
the dart was a full sized vehicle in 62 ans 63 and had 14" rims the new dart came out in 64 as a smaller version and I believe had 13" wheels unless it was high performance and it had 14" wheels.
maybe not really
235/70/15
15x8 rims fit a 1975 grandville
A 15 inch tire of widths about 205 - 235.