Richard, Plugs torque at 14lb's + or - 1lb. Any 3/8 's drive with a 8 to 10" extension would be helpfull, I would also have a can of WD40 around and a small Mag light to make sure the insulator goes on top of the plug and not off to one side. Gap plugs at .024 to .028. Call 24/7 if you need help. John hervey http://www.specialtauto.com/engine.shtml << I know this has likely appeared on the list before, but I am probably going to be attempting to change my own spark plugs. While I know which kind of plugs to get, can someone let me know what kind of tools I will need to get to the plugs, take them out, and then re-install the new ones properly? From what I understand you want to apply only a certain torque on them to install spark plugs. Also, while I'm in there I'm also going to replace my thermo-time switch. What is the difficulty level on replacing this part? >>