Scott, If I was to have to guess, I'd say a .045 gap would be a decent comprimise. The N/A engine does not have the tendency to Blow Out the spark because of the pressure from a turbocharger like the GT does. If you're going with single platinum or double platinum spark plugs you should be OK at .045. These plugs tend to run hotter than copper plugs, but thats what helps keep the plats clean....
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