Dual 44 Webers move you into the serious power circuit. This is where you start thinking about stroker cranks and ported Cylinder Heads in order to maximize the increased flow of Weber 44mm Carburetors. Velocity stacks, CB's top quality Manifolds, Worlds best Cross Bar Linkage and Air Filters are included in each kit. Weber 44 IDF Carburetors are available in kit form to fit most Dual Port VW and Porsche requirements.