Need a small block head guru PLEASE!!

Do 1979 318 heads use the same head gasket as the 1971 heads?? Or are they different?

When my Dad built the 71 motor for the Dart he used a gasket kit for a 1971. The head gasket was leaking on the outside (not into the cylinder) and dripping out the side of the block. So the motor is back out and completely torn down again. :( :( :(