replaced mine last week after 115,000 kms some were gapped at .060 as the electrodes were pretty worn down
I took out the inner fender liner on the pass side and made the job go easier on the middle and rear most plugs
also I just replaced them with the same Champion ones from the factory
even with this many kms on them, they came out rather easy, although 2 were pretty tight, and the whole job was about 1/2 hour
Blacked out 07 JKUR, safari straps, Treadwright 35's on stock rims and Spydertrax spacers, stubbied front bumper, trimmed flares, 2" body lift, 2" spacers in front with 1" spacers in rear, Gen Right Tire carrier, more to come!