You need to buy a gapper. They are like $1.00
NGK BKR7E
Copper is key. It disipates heat better and is about the best conductor of electriciy. Those things are very good when youre running high boost cuz high boost+ too much heat=lean/detonation

 

I got the gapper, np ill run up to autozone.

 

i got a set at az when i was in a pinch with a miss after seafoming, i think the ones they sell are already .028 and we played with my old ngk and could change the gap for nothing

 

all you have to do is tap them on a hard surfice, its not that hard. ALso they dont come gapped to .028 and never just install them w/o checking the gaps