*cough* *cough*
Not everyone here runs them.
I run the cheap copper autolites that cost .79 each, they work fine. Prolly should change them at 15-20k intervals, but when I pulled one at 10k, it had no noticeable wear. Fwiw, I had these plugs in when I out-dynoed several modded SVT's last year. They're still in and doing fine.
Don't spend the money on the fancy plugs unless you really just don't like changing them.
Dan Beggs
99 Cougar V6, loud
