Did I toast my 340?

Locomotion said

It could get worse if it's a cracked head. The 2 exhaust ports in the middle, which includes the one with the crossover, are already concentrating heat there. But a blown head gasket between the middle two cylinders is more common than on the end ones.

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I think he has a blown head gasket AND a leak at the crossover letting the two fluids mix right at the crossover leak.
That's what it looks and sounds like to me anyway.

(Oil pushing up through the burned gasket then mixing with coolant in the exhaust from the blown head gasket and both coming out together)