j-spec intercooler ducts, the guides sive up to the face of the z1 intercoolers and blocked about 1 inch left to right of the face of the inter cooler and about 1/2-3/4 inch up and down of the face. I will prolly try to cut widen up the ducts, and add more plastic with a soldering iron. Im just not satisfied that they are not getting full face ram affect... "full face ram" haha haa