Anyone know the ID of the heater core hose at the bleed screw adapter (07-08)? I'm adding a swirl tank to my engine and don't want to have to open the system until i know for sure if it's 5/8(like the rest of the system) or 3/4(which Nissan commonly does randomly). I've done tons of searching but haven't found a definitive answer for just that area of the hose. Thanks