Originally Posted by Venice Motor Bikes
I just pulled some junk parts from the pile & used my i-phone to take some pics.
I was really curious to see the difference from one head to another with these longer plugs.
Well, you know what they say: two heads are better than one. But you have lots of spare heads lying around. If you were out riding and something goes wrong with the engine and it blows your head off, you've got your spares to fall back on.
I only have one head, and it only has the one kind of hole in it, so I have limited resources.