Factory headers 69 dart swinger 340?

A guy local to me has a 71 340 4spd demon and he had headers put on when new. He said they are doug thorly. Which yours kind of look like.

As for the fender well headers, the picture in my profile is a 69 Dart 340 that I now own. Its a one family owned car. The car was bought new in Sedalia, MO at Bryant Motors, which is still in business. The owner had the headers installed within 2 weeks of buying. Fenderwell, which was part of the Hustle stuff package (i think actually made by Crager and were painted blue when new). The owner was killed about a month after buying the car and his dad kept it and owned it ever since. I bought the car last year.