TOPIC: Chrysler 55hp carburetor compatibility

Hello all, starting a new project and am new to outboards. I have a 1971 Chrysler 559HC but no Carburetor. The Chrysler parts manual says WB 7A , which I cannot find anywhere. I am finding so many variations for a 55 H motor that I am wondering if other carbs are compatible? Hoping to get this going and it all starts with a carb, thanks for any help.