Checking Intake Manifold Fit After Resurfacing Heads

Since vertical position is affected, is the mesh of the distributor gear to the cam gear a concern?
Do I need to shim the distributor for clearance?

Oh, boy. I"m really gonna show my ignorance here.... but, how is distributor gear/cam gear going to be affected?

As for checking fit, could you place the intake into position on the new gaskets and lay down some Plastigage?