i just tore down my s5 t2 motor for a rebuild, and the rear side of my intermidiate iron, and rear iron have one fairly deep gouge each. Would i be safe to use an intermidiate and rear iron from a s4 n/a engine i have? Any sugestions or ideas on the best course of action for this problem would be greatly apreciated. Thanks!

 

no, becuase if i remember correctly the na are 6 port andthe turbo are a normal they wont mount correctly

 

NA engines are 6 port, TII engines are 4 port. They aren't interchangable in the way you want to use them. The intermediate iron fits but I don't think some of the emissions passages line up.