broadcast sheet help

i recently found out that my broadcast sheet that i had found for my 1969 dart swinger is not the right one for my car.i had someone tell me that i can get the info off the internet for the broadcast sheet,to find out what the dart came with orginally.no luck as of yet in finding anything.does any one have any ideas where i can find out this info.there is no fender tag as well.i would like to get both of these.any help would be great!!!.thanks