1940 Buick carb

I just picked up a 40 buick special today. The car is in good original shape and I should have the engine running just as soon as I round up a carb for it. The owner misplaced the one off of it. So anyway what carb will work on this engine. Thanks in advance.

Clyde

 

Early production:

Carter 440s
Stromberg 7-32

Later production

Carter 474s
Stromberg 7-37

All but the Stromberg 7-37 are readily available.

Jon.