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Go to WS6store.com for both they have a packaged deal for both. 8.5 super conductor MSD's and NGK plugs which ever ones you prefer, F1, Nitrous, or NA.
It doesn't make THAT much difference, but that is what I run mine at. It isn't hurting the car any. 11.40s @ 116 with a bone stock longblock and an 8" slick