1969 Dodge Dart fenders swap directly with valiant fenders

I asked another question in another thread but I will put it here too. Can you use a 1973 and up fender as direct replacement on a 1967, 68, or 69 ? Market lights not withstanding. I found a guy selling a fender fairly cheep. It looks like a 67 fender in shape but he says it was a 73 but he used it on his 68. If I can use 73 and up fenders that opens up huge amount of salvage parts available. I know the 73 is part of the beak nose front ends but fenders look similar.