need carbs for 1991 pro 50

I am looking for a set of carbs for a 19-91 Pro 50 . I purchased the motor incomplete so its kind of a project and it seems all i need now is the carbs.
What fits these models(40-50-60hp etc)? it is oil injected but can i use carbs from a non oil injected motor and just run premix?

[boats.net]

They will need to be carbs for the Pro 50 and would need to be for oil injection.