Can I use B or C body manifolds fore better flow on my sleeper GTS?

HemiSSDart said

They made very few, one size for a 383 and one for a 440. I have a 440 one and saw a 383 one for sale at Carlisle a couple years ago, but I have no idea how many were made. You can make one yourself if you know how to weld steel pipe onto cast iron...

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Very interesting. I never knew they existed. What year were they offered? It would be cool to find a 383 version.

As far as making one is concerned, it's not out of the question. I think it would be easier to use a b body manifold.

Reading Tom Swope's notes he mentions milling the pass manifold 5 degrees at the head flange. Wouldn't that moke the bolts/sleeve nuts crooked to the head?