I purchased a 94 impala for my kids and as I prep to get it to be a reliable vehicle I'm having a overheating problem. Sometime worse than others. The tb bypass has been performed previous to my owning. My coolant res has two lines coming off of it. One line goes to the steam line the other has a 90 degree fitting and it over fills to the ground? I suspect maybe this car at one point had a radiator with a nipple for this other hose. The 95,96 cars only have one nipple. Is there any way to make this configuration work? The way it is currently there is no way for the system to pressurize???