Hedman does not list a round port header for a 67-69 bird in 1&3/4 only 70-81. The passengers side header i am using is the 70-81 header & it sits just right & the drivers side header is a new design to fit with a power steering gear box & it sits nice not to high & not to low. Send me an email & i will send you some pics.
nighthaw2k@hotmail.com. The only thing i'm not sure about is if it will work with a 4 speed it appears it will but i sold my z-bar so i cannot check it.