Yes they will fit a Weber intake manifold
I could never get a pair so I could never run them.
I am told that they have a bad transition problem. Other then that I don't see why you couldn't run them on the street.
Why do you ask? Do you have a deal on a pair? You would want to run the big ones and "choke" them down to about 50mm. You could machine "chokes for them out of round aluminum bar stock on a lathe. You have a lathe right? It isn't difficult.
They were designed to use Ford fuel jets for both the fuel and the air correctors. I do believe that the Holleys have the same thread for the jets. Getting the picture yet?
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