Help to I.D. a Holley Carb?

I'm trying to figure out what carb came on the motor in my Duster so I can sell it. It's a 4bbl Holley dual feed double pumper with electric choke. In the first picture you can see the number on the top of it that's GR5534, then another that's 45R-111. On the side of the carb it says P-32.
It was on a 318 and way to big for it, I think.
Any help would be appreciated.
-Jon

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