100cc plug distance, Getting it closer
There was a post about this but now I can not find it.
Did a little playing around with replacing the standard plugs with CM6 plugs, This is done by using a adapter that screws in the plug hole and makes it the same size as a CM6 plug.
You save 1/4" in width and 1/4" in height, Here are a couple pictures to look at, The left side has the standard plug and the right side has the CM6 plug.
Milton