I appreciate all the help..one more question..can you tell me where the inlet and outlet lines connect in on a 216 block. I see an allen screw in what looks a port for one of the lines. It is behind and a little to the left (toward front) of the exhaust pipe. There are two other ports hooked together by a small short metal line to the right of center and near the oil gauge line. Which is which?? Mazzer