ohh, I forgot to mention, I've ran the PF7977's 10k miles before i change them out and that was on my '04.5 and my current '06. I believe that you can go 15k miles on them, but it's just easier for me since I change out everything (oil, air, and fuel) every 10k miles.
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'06 Inferno Red 2500 QC, Auto, 285's Hankook Dynapro ATM's, Century Ultra Topper, CoolPipe/Icebox/4091, Edlebrock shocks, Amsoil'd the pumpkins and xfer case.
