I know this may be a dumb question, but I feel better asking it than guessing. I have a B18B in my CRX with a Saab T3, water and oil cooled. Currently I am only using oil cooling (and I'm not driving it more than 1-2 miles at a time right now, so I'm not that worried about cooling, yet) but I want to get the water cooling portion hooked up before I start using this car as my daily driver. I have a nice water feed line tapped already, and it gets good water pressure. (tapped right behind thermostat housing) What I'm wondering is where to return the water to. I don't have an overflow resevoir, so I was thinking of returning it directly to the radiator by way of the nipple for the overflow tank. Any comments/suggestions/experiences?