You seriously don't see how an exhaust manifold gasket is relevant to a discussion on the exhaust manifold flange?
Dropping a link without any attempt to explain your point.....yes, that's pretty well meaningless.
I explained in an earlier post that you can elongate the middle 2 holes. I posted a link to someone who actually flipped a manifold in a turbo build. If you are still not getting it......there's not much else I can do.