Firstly these intake manifolds fit 33-35mm carbs on stock or cub cylinders. Comes with clamps and gaskets. No Boost bottle holes. Secondly they match perfectly to V-Force reed cages. Link below to buy reeds and carbs now! Above all with our dyno testing these out perform all other manifolds with 39mm+ carbs. All UPP Intake Manifolds are specially formulated which allows the intake to be resistant to harsh oils and fuels.