Getting the rear plugs out is easier than putting the new ones in. I find it much easier if you use a length of rubber tubing. The tubing will allow you to guide the plug into the hole and begin the tightning. If you're a couple of threads off you don't have to worry about stripping anything because the tube will just start slipping around the end of the sparkplug. When it's going in right and the tube is slipping, finish the job up with the ratchet. I but my tube/hose at an AutoZone for under a buck. And don't forget the anti-sieze compound.
