[Mongoose930]

I am planning on starting the disassembly and testing of my engine tomorrow to address the white smoke coming out of one of my side pipes. Hoping it is just an intake manifold gasket. Whatever the problem is, I will still need to install a new intake manifold gasket at some point and I just noticed that the Cometic C5137-060 gasket set I ordered does not have the heat passage cutout. Should I cut this out or leave the passage blocked? I also have a set of of Felpro 90145 gaskets that I bought when I was planning on using the cork for the front and real rail - Cometic does not include these two gaskets. Any opinion on which gasket is better of these two? I have Edelbrock aluminum heads and and a Blue Thunder aluminum intake manifold.