Chrysler Broadcast Sheet Question

Hi all,
I have a 1970 Dodge Dart that has been restored, and in looking at the broadcast sheet for the car, I noticed that the vinyl roof on the car was orinially black, not the white which is on it now. Also, does it matter what type of wheel covers or tires you put on, or can you put what you want on your cars? Years ago, I had a blue 1970 Dart Swinger with whitewall tires and all the trim pieces. There seems to be some debate over whether or not the present car was a "Swinger" or not, but I can't seem to find it on the paperwork. I would like the car to be as original as possible, yet look like my old Dodge, too. Help, please?