Seriously, get an Aeroforce, its Sex.
I didnt think I was knocking on my 3.4 on my Gen 3 before my headers, because "it ran so damn good"
Well turns out I was grabbing 4-5degrees at WOT.
Headers, and colder plugs later, no knock at all.
But you'd be way way better getting it scanned, and staying off the throttle, then going knock knock knock BAM..