Well hotrodlincoln you're right! The manifold is a lowrise single plane. At least it was free or should I have had the owner pay me to take it off his hands? What type of application is this type of manifold for?
Too bad too, I just bought a Holley 600 cfm carb with electric choke on ebay for $10.51, and a rebuild kit from the local speed shop.
Live and learn. back to the original 2-barrel manifold, with a 2-barrel rochester.