[Targa Time]

The Porsche spark plug tool is great for starting the plug and finger tightening. I have never used it to tighten to torque. Snap On makes a thin wall spark plug socket with a universal joint attached. It has worked out well for me.
Buy the way. Cant say that bending your oil cooler was such a good idea. Porsche's are finicky beasts. If you dont have the right tool, put the project on hold until you can buy one.