I actually rebuild my engine.
The heads are off and also the intake manifold. After test fit of the intake, the heads and the new gasket to both i realized that all those openings do not perfectly match each other.
I asked one of the forum members in here, who already rebuild...
Hi, my mechanic says it needs to be replaced. Any idea where I can get one? He says it's a Lockheed cylinder. Mine is a P6 3500s from 1973. He also suggest to replace the master. Is this advised? Thanks