No nitrous until next season...
As far as the AMS manifold running 7's, thats what I had originally thought as well. I was going to go with the AMS until they treated me like a child and told me that they couldn't use a Q45 flange in any way shape or form. Magnus won my business through his customer service.
And for future reference, I called AMS and asked for the same manifold that shep runs, they straight up told me that it is a one off piece. The one they sell to "normal people" has a much smaller plenum and is very different from the one shepherd runs based on the position of his engine which allows for longer runners and a larger plenum. So if you expect to run 7's with their "normal" manifold, good luck to you
On the other hand, Marco saw gains on his car with this manifold, and I'll remind everyone that he ran low 9's no nitrous with his "normal" manifold.