You need a new cylinder head, this one is beyond use as your cam timing will be slightly off due to the height of the head unless you make an offset woodruff key for the camshaft.
And you will have spark knock problems too due to the raised compression.
If you notice the gasket has failed on the exhaust manifold side more than the intake, this is due to the exhaust manifold pieces causing warping. If you check the āface/planeā where the manifold fits, it will be bowed out of shape too, cutting those castings fixes this problem, have the machinist always check plane on the manifold face.
And you need to remove that pump and check,