Indexing plugs ??

Moroso sells flat copper washers of different thickness for indexing the plugs. They also sell a little round flat piece with a sparkplug thread in the middle. The idea is to mark your plugs before you take them out so you know where the top is and screw them one at atime into this doohickey. make a line where the line on the plug is and number it the same as the cylinder it came out of. This will make future plug changes easier to index.

don