Hey, so I went back to the junkyard to find the same car that I took the valve cover off of, and I found the piece. I may be wrong but it does not seem like it's broken off due to two reasons? it is an extremely clean break, and I went up to another chevy aveo and tapped that piece until it 'broke' off, and once again it was a clean break. That being said, it makes me believe that that piece was just glued on from the factory. I am going to use JB Weld Kiwi epoxy and some gasket sealer to make it whole and new again, I will report back with the results and a photo. Thanks for your help.