NAPA stocks NGK’s. The one over here in White Oak does, anyways.
Yep, it was me. And it was twice :). However, you guys did it on the spot for me both times, so the car wasn’t down for more than a day each time.
And that was the intercooler’s fault (shit design, high price tag.) Something I didn’t learn until it popped. Other than that, nothing ever let go that was directly related to the power level.