will they fit

Will 73-76 Duster fenders fit on a 70 Duster. I have been told no, they will not but then I have been told they will. They say the only difference is the marker lights. Not worried about that being correct. I have been trying to find fenders for this 70 Duster but it is very hard. And the only guy on FABO that said he has some is now not responding to my requests for pics about them so I am getting frustrated with this one. I am about ready to scrap this project and move on.