Motor run ok for a bit then missfires and die out, will make manifold glow if kept running when missfiring.

Daughter swamped car on flooded street. It acted like ignition was wet, water had hit coil pack so hard it knocked the vacuum line off it, hooked it back up. I dried off coil pack connection. And started it, it run ok for couple of minutes and started missing, I touched coil wire and was zapped good. Bought new wires replaced them. Car ran ok for several more minutes then started to missfire. Tried to keep it running giving it some gas. In less than a minute manifold almost was dull red. Promptly shut it down and gave up.I also noticed plug on fire wall really wet? Big one going to computer. Thought that was not good sign, no shop air or tools to get it out. Will try to dry that off also. What all happens in coil pack for ignition. Is the brains of that bolted under coil pack wet and now maybe junk. Seems like it is almost out of time or something and then intermittenly runs ok. Oil is ok and air filter is dry so nothing went down the intake.