I'm being modest.... LOL. Yes, your intake has been worked on. They did it to make it "match up" better to a square bore carb. If you re-visit my "low dollar 318" thread, you'll see mine has even more work done to it than yours.
This kind of falls into the category of "gasket matching", except your making the intake better match the carb base. Hope I didn't confuse you with this explanation.
