hi Dwndler,
i'll add a little bit more as i'm possibly wrong on my first opinion
the black ranchero is the most common so if your going to change it finding
a white dial will be difficult and also a black dial is easier to refinish so a
lot of hurdles to jump.
just as an interesting aside, in 1965 they released an auto railmaster
which was only available with a white dial. you see very very few of those
around, but thats really another story.
i look forward to following this story to its end
Graham