I am planning on making one for my van, out of 1/2 inch thick material, for the intake manifold to head. I think I have enough material to make 2-3 more. Anyone interested? It will to be determined next week, have to see what the machine stop charges. Some will be a two piece setup, one or 2 one piece. LMK in this thread.
The hole size will be as large as the gasket.