318 exhaust manifolds on a 360

The car is a 73 Dart Swinger. Was power steering changed over to manual a couple of years ago. Did have a Slant six now going to a 360 and absolutely do not want to use headers.
Treblig I want to thank you for your hard work on testing and posting casting numbers. I would never even thought to use a Grand Cherokee manifold and I own a 1996 with a 5.2. Again thank you and keep up the good work.
Kevin