i talked to mike this morning and after debating with him for about 10 minutes, we realized that the reason he said that the arizona z manifold cant be used is because he was talking about a draw-thru setup. I am going blow thru and running an intercooler and blow off valve. (looks, sound and performance) If you go blow-thru might cost you a little more but it will be what you want. At least i think so. seems safer too. And just for the sake of saying it... Mike Z said he's been around plenty of blow-thru Z setups and even has had one. They're actually on his favorites list. Thought i'd say it cause a lot of people hate on the blow-thru setup, but thought i'd say. Hope that it helps with what you are trying to do.