1969 Dodge Dart fenders swap directly with valiant fenders

I am trying to find information if the stamping was the same for 67 through 69 Dodge Dart and 67 through 69 Plymouth Valiant. I saw an ad on Craigslist for a Fender that was said to fit 69 Dodge Dart that originally came off of a valiant. I was not aware they interchange. I need fenders and I know where a Valiant in a wrecking yard is.