Yes the upper intake is that big black plastic lump on the back of the egine: all plastic and I don't know if it can be extrude-honed: good possibility. There is also a metal spacer between the head and UIM that the fuel injectors plug into, Ford calls it a Lower int. manifold, but its nothing like the duratec setup w/ thier butterflys and other ridiculous crap. SQ, where are you planning on getting the ZX2 intake from? I don't know if the Contour TB is a straight bolt on to that intake. If you get it its a good time to have it portmatch to the LIM.