To continue with photos, here is a side by side of a stock 2 bbl manifold system and my modified intake spacer alongside an unmodified one. There is more of an increase in the bore size of my modified one than is apparent in the photo. the hole of the modified port is perpindicular wheras the unmodified one has a contoured bend shape to its bore. The size of the modified bore in the intake manifold limits how big you can go with the matching port in the engine. You can only go so big in the carb spacer and still get a gasket to work. The directional ports and the transfer passages need worked on also. I am ready to test the second enlarging of them. I now have them as large as they probably can go. I will get some photos of them also.