just to clarify, i already have coolant lines from my previous rb20, which are aftermarket water lines, my only concern is that the water lines at the rear of this current rb20 have been altered, some being removed altogether, meaning i cannot simply plug in my previous lines in the same manner as befor, so really i am just wondering if it does not mater where i tap into these lines? for example, would i be able to tap into the large coolant line that comes out of the firewall almost behind the rocker covers?