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Holley's 4160 carburetors (PN 0-3310C) come standard withcathedral-type, center-hung float bowls and must be converted toside-hung, short-bowl status to fit the Rat Buster manifold's 8.75-inchcenter-to-center spacing. In this photo, we see a box stock 4160 and itscorresponding cathedral bowls (left) and the same carburetor type afterconversion to short bowls (right). The conversion parts needed for ourdual-quad Hemi are: (2) short primary float bowls (PN 134-101), (2)short secondary float bowls (PN 134-105), (4) side-hung brass floats (PN116-4) and (2) fuel transfer tube kits (PN 26-115). Also note that themodified short-bowl carburetor has been fitted with a Holleyquick-change vacuum diaphragm cover.