They are fine. I find NGKs don't last as long. They will indeed give you somemore power.
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Evan
Support your local volunteer fire department
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My Rides:
2003 Ford F-350 Long Horn Hauler
Others:
1999 Toyota Camry LE V6-Dad
2004 Chevy Tahoe Z71-Sister
2004 Toyota Camry LE V6-Mom
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