1973-75 Corvette Genuine GM Intake GR 3.270 Manifold Gasket Set 350 GM3568011973 75 Corvette Genuine GM Intake GR 3. 270 Manifold Gasket Set 350 GM356801 Please look closely at pictures to verify if this item meets your expectations. Our Business hours are Monday Friday 7am to 4pm eastern time, if you message after hours or over weekend or holidays we will respond as soon as we return to the shop. NOS original GM gasket set. 1973 75 Corvette Genuine GM Intake GR 3. 270 Manifold Gasket Set 350 GM356801 Buy it Now, Get what you