On page 17 of the Moss catalog you will find the gaskets listed and shown. It appears that the thin gaskets are the same on either side of the heat shield. I would guess from the unclear diagram: manifold, metal gasket, insulating block (spacer), gasket, heat shield, gasket, carb. Metal gaskets would go against a heat source so I'm guessing they would be placed between the manifold and the spacer but I cannot find any varification. I don't remember and I have no better pictures in any of the books I have. I would call Norman Knok at British Car Specialist ((209)948-8767)or Moss has consultants. Norman does this stuff in his sleep and is a nice person always happy to help. My BJ8 is indisposed for the winter but I can go by on Saturday (if I can remove the latest snow).
Anyone want to jump in?