Thanks, DD...I went ahead and ordered Edelbrock brand from the parts house, just so there wouldn't be any fit issues...should be here by Wednesday; I'll let you know what happens!
Do yourself a favor..Use the 9266. Not only will it seal it to the manifold, the carb will run cooler with it.When you install it get rid of every plate,gasket, that you have been using. You do not need them with this gasket. I repeat, you do not need the plate or gaskets, it goes directly on the manifold. Install the new studs that come with it. The course threads go in the manifold.
