Here’s some info on 2G carbs.
https://quadrajetparts.com/rochester...r76e9mbq5noib5
Yours is likely the larger base size.
There are 2bbl to 2bbl adaptors available.
Like this.
https://www.holley.com/products/fuel.../parts/1937MRG
Holley 2bbl is the normal swap.
Not a straight bolt on though.
Throttle linkage adaptor maybe needed. Fuel line mods. Stock Air cleaner won’t fit.
I’m curious!
What symptoms does your carb or motor have that you think it requires a carb rebuild?