Edelbrock 7164 Performer RPM Intake Manifold for Big Block Chevy Oval Port Q-JetEdelbrock part #7164 Performer RPM Q Jet intake manifold is designed for street 396 502 c. i. d. Chevy V8's with large oval port (1975 and earlier) heads. This intake manifold is designed works with spread bore carbs, but also works with Edelbrock square bore carbs without adapter. No provisions for hot air style chokes. Accepts divorced choke, late model waterneck, air conditioning, alternator and HEI equipment. UPC 085347071647 Series Performer RPM