I have a 1966 mustang 289 V8 automatic with power disk brakes. I have a question on the vacuum line to the brake booster. I have seen a Tee type fitting in the intake manifold with one line to the transmission vacuum modulator and one line to the brake booster. I have also seen one vacuum line from the intake to the vacuum booster check valve and then the vacuum modulator line also connected to the check valve (C$DZ-2365-A Power Brake Check Valve). Which one is the correct way to connect the vacuum lines?