[Purdy Swoft]

The model B carburetor has a larger throat but the bolt pattern is the same as the model A . If the intake manifold runner is enlarged to model B size you will benefit from the larger model B carburetor . If the larger model B intake is used it will cause the carburetor to be at an angle that won't line up with the choke rod . unless the kit above is used . I once cut the flange off of a model B intake , turned it to the correct angle for use on the model A and brazed the flange back in place .