70 Dart front wheel/tire size question

I think I am going to go with a different look on my 70 Dart this year instead of the Cragar wheels I have on it now. Been thinking of going with 15" rally wheels. I was wondering if anyone can tell me if I were to put 15x7 rallys on the front, how tall/wide of a tire could I use that would not cause any rubbing issues? I have 205-70's on the Cragars but they are only 6 inches wide and I don't think a 205-70 on a 7 inch wide rim would look good. Also, if anyone has any pics of a 70-72 Dart with 15x7 rallys on the front I would appreciate it if you could post them. Thanks.