'68 396, all stock. I'm just putting engine back together, and am about to install intake. the gaskets I have block off the entire coolant passage around the exhaust crossover. the crossover itself is open. I am running elec choke, and it will never see cold weather. want to leave it open. the butterfly after ex. manifold is wired open. anyway my concern is that the intake has a coolant passage under the carb location, under the exhaust crossover. I haven't been able to find a gasket that will allow coolant flow through there. is it supposed to be blocked off? it's a "hot slot" style manifold if that matters. those slots are blocked by pipe plugs. anybody know the correct gaskets I need?