So I am planning to Turbo the cobalt this summer and I was looking at an Oil & Water cooled turbo. I know that the Garrett Alpha turbo kit for our cars taps into the heater core inlet line to feed coolant to the turbo, but where do I rout the water return to? My first guess would be either the heater core return or the coolant tank but I'm not sure, any ideas or information would be great

 

bump

 

theres a hose behind the engine, near the o2 housing.