Front "China wall" sealing issue on SBM

MopaR&D said
Speaking of which I also need a proper air cleaner base with the fitting for the PCV breather, the current one just has a hole I've covered up with heavy tape and the breather is just open to the engine bay.

the pcv should be connected to manifold vacuum not the air cleaner. the breather from the other valve cover goes to the air cleaner base.