Yes sir. You should match up the gasket to the type of manifold you have. Since you're running an unmodified dual plane with the center divider intact, you should use the same type gasket, so I recommend this one. With the type gasket you have now, you really don't have a 100% dual plane intake manifold anymore. Even though it's a small amount, both sides of the intake are connected without that center divider on the gasket. That can do some funky stuff sometimes. You will likely need to retune the carburetor and I would also recheck the timing after you install that new gasket.