I like the cometic gasket approach in theory, but I'm not sure one would seal on that block. The deck is visibly not flat and although you can't tell RA from a photo, if the engine wasn't decked flat, there's little to no change it's surface finish would support an MLS gasket. Maybe a non-issue considering this thing doesn't have a lot of cylinder pressure, but still something I'd be worried about.
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-Jason
1969 Pontiac Firebird
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