All new gaskets, sealing material (such as o-rings, etc.), needles and seats, power valves, etc. At JEGS, we bring both fuel delivery and fuel management together in a carburetor that can serve your needs while not breaking your budget. Made in the U.S.A.Note: Camshafts up to 228° of duration at .050" lift and dual plane or single plane manifolds are also compatible. These carbs are not designed to be used in dual carb applications and should not be used with nitrous over a 175hp increase.