Thanks for the info. am not sure about a tool that came with the vehicle though. I don't recall any special tools that came with it. #6 sure looks like a pain to get to for sure.
After you've loosened the plug, use compressed air and blow around the spark plug. Do it one at a time as the sand blows everywhere. A fresh can of compressed air will work also.
Last thing you need is sand and dust getting inside the combustion chamber.
With #6, if you don't have the OEM tool, use a long extension and universal socket joint. A shorty extension may be needed, I can't remember if I needed it or not when I did mine.
Universal socket may not be neccessary, but it's nice to have flexiblity when it's that far back.