What Carb does this Scoop fit ???

I'm not up on the old carbs enough to know what this fits, any ideas ? Seems to be a weird size carb opening.

 

Carter-Rochester 2BBLs I would say.

 

Hey, Phil. It's a Cal-Custom 40-30 and should fit a regular 2-bbl such as a Rochester. You're missing the mounting adapters.-MIKE

 

I'll measure my Rochester 4 jet to see if it's the same. Then you can sell me the scoop! LOL