Not sure on a few things so i had to stop working on the setup today...First, factory on the saab setup, it has a line with a t running to the water port closest to the motor. Second it has another line runing from the other water port ( closest to the firewall) to a port on the water housing thing......Thats all on the factory saab setup and motor....ok now my questions, I have ran my line already with a t from the top radiator hose back to the water inlet closest to the motor. I did that because thats how the factory saab was. Is the water jacket closet to the motor the inlet or the outlet? I saw some pics with another saab turbo but he took the line off the water port closet to the motor and put it on the side to the firewall which is backwards on a factory setup. Do i need to change spots? i have not done the side closet to the firewall because im not sure if im going backwards or not. Also isn't there going to be pressure off the heater core hoses so wont that just cancel out the flow? i would think that the water outlet is suppose to have no pressure. I hope yall understand what im trying to say. Im just not sure on the coolant hoses.