O'Reilly Auto Parts sells a K-D Tool Spark Plug Wire Pulling Pliers that worked great for me. It was about $12 IIRC. The pliers are stamped heavy sheet metal and have a set of curved jaws at about 30 degrees and are coated with rubberized plastic. They are perfect for grabbing the metal connector and twisting a little, and the angle was perfect for getting to each plug. I actually removed the airbox on the passenger's side (really easy to do and made access to this side as easy as the driver's side). The whole process took me about 1-1/2 hours as I did not get in a hurry, examined each removed plug closely, and cleaned everything as I went (wires, coils, top of the valve covers).