Good Luck with changing those rear plugs. Do a search on this forum on how to make your life eaiser when changing the plugs. If you have alot of miles on the car get a set of plug wires too. Usually when you change the rear plugs you might damage the plug wires. I took the advise on this forum and did the job once, new plugs and wires at 85,000 miles. This will possibly the last set of plugs and wires I will do again on this car. Go with stock acdelco iridium plugs and wires, its usually the best!