Re: “Inside” part of road draft tube
I don't believe that is what he's looking for. When you remove a proper intake manifold from an 8BA, there is a straight vertical pipe about 5" long the fits into a hole in the valley and also into a matching hole on the bottom of the intake manifold.
I think that's what he needs, as it appears that someone removed the original to be able to run an early manifold. If I am wrong, well, I'm wrong.
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