I have been offered one of these for an SBC. It is definitely a "nostalgia item", it has the oil fill pipe. Can't find anything on the web.
Sorry, don't have a picture, it is just something offered to me. I was hoping the Edelbrock number would do it. It is a 4 bbl manifold with an open, divided, plenum. Hope that it is clear, what I mean is that it is not a squarebore or spreadbore casting, the plenum is just divided. I didn't write down the Edelbrock number, but I think it is right.
I like the C3BX. Sometimes the divider will be ground to a sharp edge. The last one I had also had a cutout for a 3bbl Holley. I am interested if you decide you don't want it. peace
The divided plenum was for a short lived 3 barrel carb. Got one on my coupe with an Edelbrock carb, it runs fine.