I had coolant leaking from heater hose onto number 8 cylinder coil pack. Coolant went into the ignition wire. Fried the coil pack and corroded the wire. I replaced all above. Still misfires. New codes p0300 and the injector codes p0208 10 codes total all different cylinders. I'm at a loss now? Any suggestions

 

According to these codes your fuel injector wiring must have sustained some damage is my guess, which of course will set off the infamous IBD II code P0300.