5.4 intake/coolant leak

[Rocket Power]

So my trucks been misfiring and figured the truck has 50K on it since I last changed the plugs. I pull the #5 plug (front driver side) and notice the boot has a little coolant and the plug has a little on the outside. then I notice that the area between the alum coolant crossover and plastic part under it looks like it has been seeping.
Do I need a new intake or is there a seal/gasket that goes in there?

[OxmanWI]

Ether or, I'd pull it off and check out the whole manifold and gasket, check for cracks and any damage that might be near the gasket seal.