Fix for the issue below. Clogged catalyst on bank 2. Replace the catalyst and the car is running like a champ. I thought I should share this in case someone is having this issue .

Symptom was misfire / check engine light blink on WOT @ around 90mph

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First codes:
P0300
P0304
P0308
P1314

Changed all the plugs nkg gap .040, moved the coils to the next bank, and checked for oil...none found

Second Codes:
p0300
p0306
p0308
p1314

Did another pull

Code:
P0300
P0304
P0308
P1314