3rd redo of installing the super six manifolds....help with gaskets

OK sorry for so damn many posts about my swap from 1bbl to 2bbl system in my dddddart 225ci.
I thought I had manifolds on, but sounded louder. Oh, that would be because exhaust is seriously flowing out of the connection where the intake and exhaust part sits ontop of the exhaust pipe.
I recalled first forgetting to put that little 3 holed metal piece on, so had to remove it all and put it in. (that was my 2nd time). I did not replace the manifold gasket because it is only 1 year old and still looked good, did not tear apart when I removed the manifolds. I did have the Felpro, which i used the exhaust pipe gasket and the 3 hole metal thingy, but did not use the main gasket. I also have the Remflex gasket, which comes with a 3 hole gasket? I think I need that to stop the leak. Why didnt Felpro come with that gasket? Is there normally a gsket between intake and exhaust where they mate up ontop of the exhaust pipe?

Anyhow now I prepare to remove the entire thing again and put this 3 hole gasket in, I am wondering should I go ahead and put the remflex on tha manifold as well? It is so thick, I am concerned I cant get the nuts back on the studs. Also the old gasket is adhesed on the block. Nevermind the hell I am in trying to get the kickdown linkage working... another thread. Thanks for any ideas and help. this is a back breaker for sure.