Okay so today I am going to be replacing my stock S header with an E header. I have the original FMF Q slip on. Now there is normally a connector that connects the header to the muffler for the S. The new E header fits right into the muffler with no connector or spacer needed at all and it is snug. Once I clamp this down will it have an air tight seal? I have the connector for the E header to the muffler but the connector doesnt fit around the header nor does it fit inside the muffler. I see no reason to have to use it seeing the header and muffler fit snug with no addational parts. Is this correct? I have searched and seen some anti seize was also recommended which is what I will be doing.