I have a 68 Dart and while still a project I have been obsessed with front tire size on A-bodys. Mine will be more drag orientated so the 26" tall MT sportsman will work and I do believe a 26" tall tire is the "right" size. I have a picture somewhere of a dart with a 205/70 that looked pretty good. Not too wide, but definitely had height. I agree that the 165 is too short and I don't think you can get a 185 that will look right.