What plugs? These engines run like a bag of nails on the wrong ones. Also that's not a stage 0, that's just a normal service. Stage 0 would include fuel filter, PCV lines and a vac lines, trans fluid, and coils on top of what you've bought.
Stage 0?!
Lol, stage 0
"Sick bro, just stage 70'd my Volvo"
"What's that then?"
"Oh, just an oil change"
Copper? Get rid of them, wrong gap, wrong electrode. It's the 2.3 T5, right? NGK PFR6Bs or Bosch FR7DPs (OEM).
It’s in with kwik fit
My metal dust caps are stuck and my tyres need air - lesson learnt, apply grease first or don’t bother with metal caps
I used them once. The valve cap fused to the threads. I had to use mole grips to unscrew them, and then the whole valve came out instead and my tyre rapidly deflated in front of my very eyes.