Another carburetor identification question

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I have a carburetor that a gent wants me to clean up for him. It came off of his 29 pickup. I'm not familiar with this one. It is a Zenith though.
I got all of the jets to come out except the main jet. The screw head of the jet sheared off almost immediately when I put pressure on it to take it out. Getting the rest of it out may be a challenge.
Is the main jet on this carburetor the same as the standard Zenith carbs?