1975 NASCAR International Stock Car Racing Rule Book NASCAR Grand National ® Championship Division Section 20-3 -- Intake Manifolds

Must be approved by NASCAR. To be approved, the manifold must be submitted to NASCAR for inspection. If the manifold is approoved, the identical production manifold will be eligible for use in NASCAR competition upon verification of the availability of a minimum quantity of 25 identical production manifolds which are available to anyone at a maximum retail cost of $250.00 each. Vendor must furnish NASCAR with a minimum of 5 manifolds, on a consignment basis, for which vendor will be paid if a manifold is sold to a competitor. Only internal manifold modifications below the carburetor base are permitted after purchase from the finished parts supplier.