Quote from kar-nutI don't give a hoot about the Ford drawing it is only a guide, parts are not made to spec. The ONE original H-pipe I saw had a stripe on it not a daub, & the color was was not yellow it was more of a green shade. I know the H pipe was original because the car is unrestored with zero miles on it. It was not aluminized steel it made from SAE 1020 steel, it also was stamped GM
Now thats a turn of events from someone who normally swears the engineering drawings are the law...