Thin-wall spark plug socket?

I had to turn down my 5/8 ths socket on my Trickflow SB heads. Find someone with a lathe. Spark plugs don't need to be that tight, they are not head bolts, a little past snug after the washer is crushed is fine.
Champion makes a spark plug lubricant for aircraft plugs, aluminum heads. Most of all in aluminum, make damn sure the plug is started straight, once you cross thread it, you are not going to have a good day.