On my 4.7 liter the water pump is easy to get to. All I took off was the intake tube from the air box that goes to the throttle body. As far as all the old lines, I just ripped them all out/cut them out as they were going into the garbage. The lines under the jeep all all out except for where the go up by the transmission under that heat shield. I just cut on both sides of the heat shield and left them up there. Won't hurt anything and they aren't going anywhere.