All 8 are done...... first time novice changing 5.4 plugs myself wasn’t difficult by any stretch. I loosened them 1/2 turn then sprayed carb cleaner down the plug wells and waited 20 min, then used my Dewalt impact to remove them (swivel required for back two). They are all 9/16 deep well socket. Then just throw em back in and torque them.
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