Technical What Stromberg ist that?

I have here a Stromberg carb and not sure witch modell it is.
Look like a 97 but the number on confuse me

 

Its a 48.
97's & 81's have 2 ball connections for the accelerator pump rod (S&W)

 

Thanks
from what I found in the internet it is a lager version of the 97
Will a 97 overhaul kit fit to this carb?

 

Yes,they use the same accelerator pump.Jets and power valve are different .The 48 is the largest CFM.

 

many thanks

 

the 97 is 155 CFM
The 48 is 180 CFM