Also, at 114,000 miles you should change the wires too. If they are original it'* not a bad idea. Change these one a time to avoid confusion. Get your new wire set and arrange them from shortest to longest. Start with the #1 plug/wire and do the front 3 (1, 3, 5), then the three in back (2, 4, 6).
The wires go from shortest to longest starting with #1, 3, 5, 2, 4, and then 6 being the longest. Usually 2 and 4 are just about the same length.
Also, check the gap on your plugs before installing. They sell round gapping tools at auto stores, usually at the counter. .060 is the stock gap.