I bought a 79 Z50 from a guy last year. The engine is from a CT70. The carb is a keihin, but it is not the usually square carbs for a CT70. I know keihin made round carbs for the CT70, but this carb does not have a choke or petcock on it. I have a few pictures I will post, and am hoping somebody can tell me what carb this is. Just trying to find out if I should just try to get a aftermarket carb or stick with this one.