You can use the stock gap with those plugs with great results. Check if you need same plug for both cars which dont seem right to me! I have used the NGK Iridiums with the stock gap for over 26,000 miles and love them. Much smoother but no better gas mileage really!! I got MOPAR high performance wires and they fit fine and I think same number fits all Cruisers.
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06 GT Auto, Cool Vanila Exterior, Presto Change O 3bl, Cargo Mat and Net, Billet Oil Cap, Yoko Avid 4Vs Tires, 03 GT Wheels, 4 Chrome Door Handle Screw Covers, MOPAR Mud Flaps, H&R Rear Sway Bar, Freedom Strut Tower Bar, Rear Door Sill Covers.
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