New spark plugs
ok so I have the stock wires on my mustang with 140xxx and I need new plugs soon so I was planning on doing plugs and wires would it be worth doing the 8.5 mm MSD wires off AM. And some higher end spark plugs like platinum or iridium? if so what would be a good plug NGK iridium IX? or should I just do motor craft plugs and wires? Lastly in ether scenario would adding a MSD, Accel, or Screaming Demon from AM be worth it?
Blacking it out, MAC duel exhaust, SR CAI, Performance Automatic shift kit. And a long build list wrecked in July '14