One of the benefits of these "fancy dan" spark plugs is that they last longer. Problem is, a steel threaded plug sitting in an aluminum head for a long time can become seized. Ask any old air cooled flat 4 engine VW mechanic!
Be sure to use a dollop of never-seize thread lubricant to prevent stuck spark plugs.
Having said all that, what is more needed is a high performance replacement ign. box. Race Dweeb up there in Michigan has been trying to come up with one to sell, but so far, no luck.
