Curious what's out there for a header for my 440 dart sport

oldkimmer said
What is ur power level. Maybe the Schumachers will suffice. Kim

This engine I'm unsure it was in a boat. Is a recent rebuild with Schnider little big cam. Wasn't able to extract good info from guy. Will call his machine shop to see wday they did. I have another 69 440 block that'll be built next couple years.