Help please, plug reading wizards!

I picked up some fresh AC Delco plugs last night, I'll be installing them and report back on my findings.
You'll be sorry. Every time I have ever attempted to run AC plugs in a Mopar engine whether resistor or non resistor, I have been greeted with an unbearable high pitched whine in my speakers whenever I had the radio on. Champion or autolite and stay with the basic cheap copper plugs, these engines don't really like the expensive iridium, double platinum, etc waste of money there.