Are you pulling in an organized group or a daily user?
If you are pulling in an organized group we need to know what the rules about carbs to answer your question.
Type of fuel you plan to run?
Any mods like cam, mods done to the intake and exhaust ports ?
Stock compression?
What RPMs are you planning to run when you pull?
Stock or modified ignition? What changes did you do if modified?
A stock 14 or 16 horsepower Kohler has a #30 Kohler carb. There are plenty of mods you can do to a #30 carb depending on what mods you did to the engine.
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