couple questions concerning the EGR on this exact kit that you buy from GM. part number is 88894339 anyways, does this manifold come with the EGR in the back of it? and another thing i wanna know is, if it doesnt come with the EGR (which i'm thinking it doesnt) is it still ok for me to use the manifold on my 2000 Z28? i'm going to be adding LT headers along with this manifold and i'm deleting the EGR and the AIR anyways so i was curious about this whole EGR crud.