the plugs i honestly dont know i have heard some ppl say u gap them a tad more but i DONT know for sure

but u tune to add fuel and so on just like turbo

N2o is a forced induction plain and simple put a 50 wet shot on it TUNE it and i dont meen a BASE MAP that is junk for any setup other than get u to a tune, u may be able to throw a 75 at it but a good tunner should be able to tell u more i would also recommend a tad bit bigger inj 320cc on a 50-75 u should be good