I’m replacing my cracked manifold with a spare I bought years ago. I wasn’t able to find a gasket in the usual places although I didn’t call a couple of the suppliers that don’t list what they have. Frustrated as hell so I bought the Felpro exhaust gasket sheet and cut out my own. Looks like it’s going to be good. Used a dremel to make the holes and that worked great. Will post pics. One step away from bolting it up.