From the one that I saw where he didn't cut, he just positioned the pipes differently or something real simple like that, he didnt talk about custom tanks and what not.
but I'm not really sure how though after looking at those pics again...I think he ran them through the holes behind the lights(where the cold air kits go through) It seems like if you could jsut get the pipes from the cooler angled, then it would be preety easy to route them through those holes., but I haven't done it yet either.