Doug's Headers on 74 Duster

Ok, just want to confirm that a set of Doug's D453 headers will fit on my 74 Duster. I am putting a 340 in and want to order headers. I think all should fit well, but everything I see seems to say 71-72 Duster and not the later models. Anyone else running these on their 74 Duster?

Thanks for the help..