Ironic timing -- I just installed these on Saturday. Haven't had a chance to test their performance yet as I'm waiting on parts (replacing the AC compressor, alternator, and some idler pulleys while I'm under the hood) but will report back once I have some miles on them.
I will say, despite claims of increased life I'll still replace them at 50k intervals. This is the only engine I've ever had that builds up so much stuff on the spark plugs. Leaving even good plugs in for too long makes removal sketchy even with antiseize on the threads.
Looking at the condition of the plugs I removed I'm genuinely surprised the truck ran as well as it did.
