Just on plugs-
I realize that any company can say their product is the best in the world. That said, on Stacey David's tv show Gearz, the E3's plug. It was tested by a engine builder named, Williams Precision Engines. Their test showed the TQ went from 428 to 425.
If you can beleive the video showing the better/larger spark, they may do very well.
Black Book: E3 SPARK PLUGS | Stacey David's GearZ
Another test by engineers at Michigan Technological University.
http://www.youtube.com/watch?v=62KavugC-5o
There's also been other tests done by other company's on David's show, but you get the drift.
My engine build is sponsored by E3 plugs for the life of my Cobra.
The plan is to run both conventional plugs, then the E3's on the engine and,... chassis dyno, to see any difference's. So, we'll see how it goes.