Cashel - Sounds great man. I have the exact same set up on my Screw as well, right down to the muffler size and pipe thickness. It not only sounds perfect, but I definately noticed a difference in performance.
Nice Screw BTW, I just popped into your gallery.
I need to update mine, I've done a lot more to my truck since my last pics. Glad to hear you like the set up, I've been extremely happy with the results.
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JK007
2003 SCREW, FX4 Lariat
35s on 16s / 3" PA Body Lift / Bilstein shocks /
K&N FIPK / EDGE / Magnaflow True Duals / Other appearance mods