are these the right manifolds

oldkimmer said
..........I believe the 440 69 only manifold is casting number 3462017 for the drivers side.....kim............dam I'm too late.....

I run headers. but was just wondering, have any of you guys ever ported or opened up any stock type exhaust manifolds? think one of our engine gurus around here did it on his dart.--??:coffee2: