69 A body Headers

I,m looking for headers to fit my 69 Dart that will have a 440 RB installed ? Hopefully full length . As everyone knows finding headers to fit with the pwr steering box seems to be impossible . I need 2" tubes with 3 1/2" collectors and 3/8" flanges. Seems I may have to buy a kit and fabricate myself if there's a kit out there ? Not sure why someone hasn't made headers for this combination because it seems like there are more than enough A bodies with 440's in them.