Header Questions for a 73Duster

That's news to me as I know two 73-76 Dusters with Dougs on them. What's the issue. Only real difference is the style of motor mount, drag link.

The front clip is the same from 67-76 on A bodies

MMMmm interesting, all I know is what the manufacture states with it will fit and won't.

Heres what Pertronix's sent me:

Paul,

The Doug's version will only cover up to 1972 because there was steering and
motor mount change in 1973 which the Doug's header will not accommodate and
the Patriot will. Please see attachments for pictures.

Thank you,
Tech Dept

Is there a way you can post pictures?