Hi Zeracer I did this recently, It was not hard . I used a set of the right angle needle nose pliers I bought at harbor freight there is a tool that looks like an open end wrench that is offset to pop off each wire just be careful to pop each one off as you may know this car has 12 spark plugs I took each plug out they looked original and cleaned them with a wire bush on a dremmel tool and took some wet dry sand paper to clean and make sure the gap was on spec took me about an hour to do I took each of the bank of electronic spark control modules coil packs and layed them aside on top of engine each wire has its own spark plug make sure you remember where each spark plug goes there are videos on youtube on this. While you have this all apart you may as well check the upper valve cover gaskets and lightly tork the big valve cover down I mean very lightly the (( top covers have aluminum screw with hex tops takes these out gently and throw them away and buy the steel ones because if you reuse or tork them they will break off )). For the top gasket material I used for the little egr covers is the high temp liquid gasket its red and you must clean the old gasket material out being careful not to have any of it fall inside the timing chain area . You only need a small bead make sure it goes inside the grove of the small cover . Make sure you let it set over night and then you can tork it down to specs. I haven't had a leak yet and reusing the spark plugs runs like a champ. . My car may have had plugs changed at some point since I bought car used your plugs could be worse .Hope this help you . I did it so can you. Good luck